load_gdiplus_winxp: Fix a broken dll installation.
load_gdiplus_winxp: Fix a broken dll installation.

This patch fixes a regression caused by 7906460ef32174682947002ef81a1123c7334c3e.
_sfx_0005._p is not the gdiplus.dll.

Winetricks/winetricks,Winetricks/winetricks