Some minor improvements and fixes.

diff --git a/dlls/comctl32/comctl32undoc.c b/dlls/comctl32/comctl32undoc.c
index b51c65b..c521532 100644
--- a/dlls/comctl32/comctl32undoc.c
+++ b/dlls/comctl32/comctl32undoc.c
@@ -252,7 +252,7 @@
     FIXME (commctrl, "(%lx %lx %lx %lx) empty stub!\n",
 	   dwParam1, dwParam2, dwParam3, dwParam4);
 
-    return -1;
+    return TRUE;
 }
 
 
@@ -1353,7 +1353,7 @@
 	}
 
 	if (uOptions & DPAS_INSERTAFTER) {
-	    TRACE (commctrl, "-- ret=%d\n", r);
+	    TRACE (commctrl, "-- ret=%d\n", l);
 	    return l;
 	}
     }