Fixed some compile errors and warnings under Visual C++

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403655

src/video/SDL_video.c

@@ -1630,7 +1630,7 @@ SDL_CreateTextureFromSurface(Uint32 format, SDL_Surface * surface)
         if (surface->format->Amask
             || !(surface->map->info.flags &
                  (SDL_COPY_COLORKEY | SDL_COPY_MASK | SDL_COPY_BLEND))) {
-            int it;
+            Uint32 it;
             int pfmt;
 
             /* Pixel formats, sorted by best first */
@@ -1724,7 +1724,7 @@ SDL_CreateTextureFromSurface(Uint32 format, SDL_Surface * surface)
             }
         } else {
             /* Need a format with alpha */
-            int it;
+            Uint32 it;
             int apfmt;
 
             /* Pixel formats with alpha, sorted by best first */

src/video/win32/SDL_win32video.h

@@ -87,7 +87,7 @@ typedef struct SDL_VideoData
 /* *INDENT-ON* */
 
     int keyboard;
-    SDL_scancode *key_layout;
+    const SDL_scancode *key_layout;
 } SDL_VideoData;
 
 #endif /* _SDL_win32video_h */

src/video/win32/SDL_win32window.c

@@ -642,6 +642,7 @@ SDL_HelperWindowCreate(void)
 {
     HINSTANCE hInstance = GetModuleHandle(NULL);
     WNDCLASS wce;
+    HWND hWndParent = NULL;
 
     /* Make sure window isn't created twice. */
     if (SDL_HelperWindow != NULL) {
@@ -662,7 +663,6 @@ SDL_HelperWindowCreate(void)
         return -1;
     }
 
-    HWND hWndParent = NULL;
 #ifndef _WIN32_WCE
     /* WinCE doesn't have HWND_MESSAGE */
     hWndParent = HWND_MESSAGE;