msi: Strip the file off the parent path if it's not a directory.

dlls/msi/appsearch.c

@@ -964,6 +964,12 @@ static UINT ACTION_AppSearchDr(MSIPACKAGE *package, LPWSTR *appValue, MSISIGNATU
 
     if (parent)
     {
+        if (!(GetFileAttributesW(parent) & FILE_ATTRIBUTE_DIRECTORY))
+        {
+            PathRemoveFileSpecW(parent);
+            PathAddBackslashW(parent);
+        }
+
         strcpyW(path, parent);
         strcatW(path, expanded);
     }

dlls/msi/tests/package.c

@@ -7169,10 +7169,7 @@ static void test_appsearch_drlocator(void)
     sprintf(path, "%s\\one\\two\\three\\FileName2", CURR_DIR);
     r = MsiGetPropertyA(hpkg, "SIGPROP7", prop, &size);
     ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %d\n", r);
-    todo_wine
-    {
-        ok(!lstrcmpA(prop, path), "Expected \"%s\", got \"%s\"\n", path, prop);
-    }
+    ok(!lstrcmpA(prop, path), "Expected \"%s\", got \"%s\"\n", path, prop);
 
     size = MAX_PATH;
     sprintf(path, "%s\\FileName3.dll", CURR_DIR);