comctl32/imagelist: Fix a copy/paste typo in ImageList_Merge.

dlls/comctl32/imagelist.c

diff --git a/dlls/comctl32/imagelist.c b/dlls/comctl32/imagelist.c
index 7ca1fc9..d67672f 100644
--- a/dlls/comctl32/imagelist.c
+++ b/dlls/comctl32/imagelist.c
@@ -2037,7 +2037,7 @@
     if (himlDst)
     {
         imagelist_point_from_index( himl1, i1, &pt1 );
-        imagelist_point_from_index( himl1, i2, &pt2 );
+        imagelist_point_from_index( himl2, i2, &pt2 );
 
         /* copy image */
         BitBlt (himlDst->hdcImage, 0, 0, cxDst, cyDst, himl1->hdcImage, 0, 0, BLACKNESS);