Added stub implementation with correct prototypes for
ExtractAssociatedIconExA/W.

diff --git a/include/shellapi.h b/include/shellapi.h
index 708c81f..e22bbc1 100644
--- a/include/shellapi.h
+++ b/include/shellapi.h
@@ -270,6 +270,9 @@
 HICON       WINAPI ExtractAssociatedIconA(HINSTANCE,LPSTR,LPWORD);
 HICON       WINAPI ExtractAssociatedIconW(HINSTANCE,LPWSTR,LPWORD);
 #define     ExtractAssociatedIcon WINELIB_NAME_AW(ExtractAssociatedIcon)
+HICON       WINAPI ExtractAssociatedIconExA(HINSTANCE,LPSTR,LPWORD,LPWORD);
+HICON       WINAPI ExtractAssociatedIconExW(HINSTANCE,LPWSTR,LPWORD,LPWORD);
+#define     ExtractAssociatedIconEx WINELIB_NAME_AW(ExtractAssociatedIconEx)
 HICON       WINAPI ExtractIconExA( LPCSTR, INT, HICON *, HICON *, UINT );
 HICON       WINAPI ExtractIconExW( LPCWSTR, INT, HICON *, HICON *, UINT );
 #define     ExtractIconEx WINELIB_NAME_AW(ExtractIconEx)