user32: Allocate memory based on HICON instead of DWORD to fix 64 bit problems

[Bruno Jesus]

Copied from Anastasius reply:
HICON = HANDLE = 64-bit on 64-bit but the array is allocated with
hard-coded 32-bit element size instead using 'sizeof(HICON)'.

Full analysis:
https://bugs.winehq.org/show_bug.cgi?id=37907#c1

Fixes:
https://bugs.winehq.org/show_bug.cgi?id=37907
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diff --git a/dlls/user32/cursoricon.c b/dlls/user32/cursoricon.c
index 3c31894..353169f 100644
--- a/dlls/user32/cursoricon.c
+++ b/dlls/user32/cursoricon.c
@@ -1165,7 +1165,7 @@ static HCURSOR CURSORICON_CreateIconFromANI( const BYTE *bits, DWORD bits_size,
 
     cursor = alloc_icon_handle( TRUE, header.num_steps );
     if (!cursor) return 0;
-    frames = HeapAlloc( GetProcessHeap(), 0, sizeof(DWORD)*header.num_frames );
+    frames = HeapAlloc( GetProcessHeap(), 0, sizeof(HICON)*header.num_frames );
     if (!frames)
     {
         free_icon_handle( cursor );