Silence various compiler warnings

None of them pointed to a serious problem, fortunately.

src/c4group/c4group_ng.cpp

@@ -240,7 +240,6 @@ bool ProcessGroup(const char *FilenamePar)
 					case 'y':
 						{
 							Log("Applying update...");
-							bool success = false;
 							unsigned long pid = 0;
 							bool have_pid = false;
 

src/game/player/C4Player.cpp

@@ -538,7 +538,7 @@ void C4Player::PlaceReadyBase(int32_t &tx, int32_t &ty, C4Object **pFirstBase)
 	int32_t cnt,cnt2,ctx,cty;
 	C4Def *def;
 	C4ID cid;
-	C4Object *cbase,*fpower=NULL;
+	C4Object *cbase;
 	// Create ready base structures
 	for (cnt=0; (cid=Game.C4S.PlrStart[PlrStartIndex].ReadyBase.GetID(cnt)); cnt++)
 	{

src/gui/C4UpdateDlg.cpp

@@ -211,12 +211,12 @@ bool C4UpdateDlg::ApplyUpdate(const char *strUpdateFile, bool fDeleteUpdate, C4G
 	if (IsWindowsWithUAC()) strUpdateProgEx.Copy(Config.AtTempPath("setup.exe"));
 	// Extract update program (the update should be applied using the new version)
 	C4Group UpdateGroup, SubGroup;
-	char strSubGroup[1024+1];
 	if (!UpdateGroup.Open(strUpdateFile)) return false;
 	// Look for update program at top level
 	if (!UpdateGroup.ExtractEntry(strUpdateProg.getData(), strUpdateProgEx.getData()))
 		return false;
 #if 0
+	char strSubGroup[1024+1];
 		// ASK: What is this? Why should an update program not be found at the top
 		// level? This seems obsolete. - Newton
 		// Not found: look for an engine update pack one level down

src/platform/StdDDraw2.cpp

@@ -634,10 +634,6 @@ bool CStdDDraw::Blit(SURFACE sfcSource, float fx, float fy, float fwdt, float fh
 				scaleY2 = scaleY * iTexSizeY;
 			}
 
-			// Size of this texture actually containing image data
-			const int iImgSizeX = (iX == sfcSource->iTexX-1) ? ((sfcSource->Wdt - 1) % iTexSizeX + 1) : (iTexSizeX);
-			const int iImgSizeY = (iY == sfcSource->iTexY-1) ? ((sfcSource->Hgt - 1) % iTexSizeY + 1) : (iTexSizeY);
-
 			// get new texture source bounds
 			FLOAT_RECT fTexBlt;
 			fTexBlt.left  = Max<float>(fx - iBlitX, 0);
@@ -672,6 +668,9 @@ bool CStdDDraw::Blit(SURFACE sfcSource, float fx, float fy, float fwdt, float fh
 			// in question is currently fixed by using non-power-of-two
 			// and non-square textures.
 #if 0
+			// Size of this texture actually containing image data
+			const int iImgSizeX = (iX == sfcSource->iTexX-1) ? ((sfcSource->Wdt - 1) % iTexSizeX + 1) : (iTexSizeX);
+			const int iImgSizeY = (iY == sfcSource->iTexY-1) ? ((sfcSource->Hgt - 1) % iTexSizeY + 1) : (iTexSizeY);			
 			// Make sure we don't access border pixels. Normally this is prevented
 			// by GL_CLAMP_TO_EDGE anyway but for the bottom and rightmost textures
 			// this does not work as the textures might only be partially filled.

src/platform/StdWindow.h

@@ -334,7 +334,7 @@ protected:
 	virtual bool Win32DialogMessageHandling(MSG * msg) { return false; };
 #elif defined(USE_X11)
 protected:
-	bool FindInfo(unsigned int samples, void** info);
+	bool FindInfo(int samples, void** info);
 
 	unsigned long wnd;
 	unsigned long renderwnd;

src/platform/StdXWindow.cpp

@@ -208,7 +208,7 @@ static std::vector<XVisualInfo> EnumerateVisuals(Display* dpy)
 static Window CreateRenderWindow(Display* dpy, Window parent, XVisualInfo* info)
 {
 	XWindowAttributes parent_attr;
-	if(!XGetWindowAttributes(dpy, parent, &parent_attr)) return NULL;
+	if(!XGetWindowAttributes(dpy, parent, &parent_attr)) return None;
 
 	XSetWindowAttributes attr;
 	attr.border_pixel = 0;
@@ -372,7 +372,7 @@ CStdWindow * CStdWindow::Init(CStdWindow::WindowKind windowKind, CStdApp * pApp,
 	renderwnd = CreateRenderWindow(dpy, wnd, static_cast<XVisualInfo*>(Info));
 	if(!renderwnd)
 	{
-		XDestroyWindow(dpy, wnd); wnd = NULL;
+		XDestroyWindow(dpy, wnd); wnd = None;
 		Log("Error creating render window.");
 		return NULL;
 	}
@@ -447,7 +447,7 @@ void CStdWindow::Clear()
 	Info = NULL;
 }
 
-bool CStdWindow::FindInfo(unsigned int samples, void** info)
+bool CStdWindow::FindInfo(int samples, void** info)
 {
 #ifdef USE_GL
 	std::vector<XVisualInfo> infos = EnumerateVisuals(dpy);