win32: add some missing #include <windows.h>

src/c4group/c4group_ng.cpp

@@ -45,6 +45,9 @@
 #include <C4Update.h>
 #include <C4ConfigShareware.h>
 #include <StdRegistry.h>
+#ifdef _WIN32
+#include <windows.h>
+#endif
 
 int globalArgC;
 char **globalArgV;

src/platform/C4FileClasses.cpp

@@ -23,7 +23,7 @@
 #include <C4FileClasses.h>
 
 #include <StdRegistry.h>
-#include <winreg.h>
+#include <windows.h>
 
 #define C4FileClassContentType "application/vnd.clonk.c4group"
 

src/platform/StdRegistry.cpp

@@ -27,7 +27,7 @@
 #include <StdRegistry.h>
 
 #ifdef _WIN32
-#include <winreg.h>
+#include <windows.h>
 #include <stdio.h>
 
 bool DeleteRegistryValue(const char *szSubKey, const char *szValueName)

src/platform/StdWindow.cpp

@@ -35,6 +35,7 @@
 #ifdef USE_DIRECTX
 #include <StdD3D.h>
 #endif
+#include <windows.h>
 #include <mmsystem.h>
 #include <stdio.h>
 #include <io.h>