shlwapi: Fix a return value in UrlEscapeA.

dlls/shlwapi/tests/url.c

@@ -480,9 +480,7 @@ static void test_UrlEscape(void)
 
     size = 1;
     ret = UrlEscapeA("/woningplan/woonkamer basis.swf", empty_string, &size, URL_ESCAPE_SPACES_ONLY);
-    todo_wine {
-        ok(ret == E_POINTER, "got %x, expected %x\n", ret, E_POINTER);
-    }
+    ok(ret == E_POINTER, "got %x, expected %x\n", ret, E_POINTER);
     ok(size == 34, "got %d, expected %d\n", size, 34);
 
     for(i=0; i<sizeof(TEST_ESCAPE)/sizeof(TEST_ESCAPE[0]); i++) {

dlls/shlwapi/url.c

@@ -860,7 +860,7 @@ HRESULT WINAPI UrlEscapeA(
             *pcchEscaped = lenA;
         } else {
             *pcchEscaped = lenA + 1;
-            ret = E_INVALIDARG;
+            ret = E_POINTER;
         }
     }
     if(escapedW != bufW) HeapFree(GetProcessHeap(), 0, escapedW);