Index: dll/win32/browseui/comcat.cpp
===================================================================
--- dll/win32/browseui/comcat.cpp	(revision 72017)
+++ dll/win32/browseui/comcat.cpp	(working copy)
@@ -254,6 +254,10 @@
     if (!fDsa)
         return E_FAIL;
 
+    // Don't do anything if we have nothing
+    if (cRequired == 0 && cImplemented == (ULONG)-1)
+        return E_FAIL;
+
     if (cRequired > 0 || cImplemented == (ULONG)-1)
     {
         FIXME("Implement required categories class enumeration\n");
@@ -260,10 +264,6 @@
         return E_NOTIMPL;
     }
 
-    // Don't do anything if we have nothing
-    if (cRequired == 0 && cImplemented == (ULONG)-1)
-        return E_FAIL;
-
     // For each implemented category, create a cache and add it to our local DSA
     for (i = 0; i < cImplemented; i++)
     {