Fix GDI_PAL_COLORS crash.

[Glenn Wurster]

GDI_PAL_COLORS is composed of 16 bit indexes, we only got the first
256 colours.  Instead of making a copy of possibly 65535 different
palette entries in the logical palette, get a pointer and build up the
dib colours as needed.  Yes, the % is how windows works.  Yes,
conformance tests are in the queue of patches to be submitted.

Author:
  * Glenn Wurster (gwurster at scs.carleton.ca)

ChangeLog:
  * Fix array index crash in buidling GDI palette from Logical Palette.

Index: dlls/x11drv/dib.c
===================================================================
RCS file: /home/wine/wine/dlls/x11drv/dib.c,v
retrieving revision 1.27
diff -u -r1.27 dib.c
--- dlls/x11drv/dib.c	31 Mar 2005 19:13:03 -0000	1.27
+++ dlls/x11drv/dib.c	1 Apr 2005 05:55:17 -0000
@@ -418,18 +418,21 @@
     else
     {
         HPALETTE hpal = GetCurrentObject(physDev->hdc, OBJ_PAL);
-        PALETTEENTRY pal_ents[256];
+        PALETTEOBJ * palPtr = GDI_GetObjPtr( hpal, PALETTE_MAGIC );
         WORD *index = (WORD*) ((LPBYTE) info + (WORD) info->bmiHeader.biSize);
+        int entry;
 
-        GetPaletteEntries(hpal, 0, 256, pal_ents);
+        if( !palPtr ) return 0;
 
         for(i = 0; i < colors; i++, index++)
         {
-            colorTable[i].rgbRed = pal_ents[*index].peRed;
-            colorTable[i].rgbGreen = pal_ents[*index].peGreen;
-            colorTable[i].rgbBlue = pal_ents[*index].peBlue;
+            entry = *index % palPtr->logpalette.palNumEntries;
+            colorTable[i].rgbRed = palPtr->logpalette.palPalEntry[entry].peRed;
+            colorTable[i].rgbGreen = palPtr->logpalette.palPalEntry[entry].peGreen;
+            colorTable[i].rgbBlue = palPtr->logpalette.palPalEntry[entry].peBlue;
             colorTable[i].rgbReserved = 0;
         }
+        GDI_ReleaseObj( hpal );
     }
     return colorTable;
 }