mshtml: Better res protocol URL parsing.

dlls/mshtml/protocol.c

@@ -631,23 +631,20 @@ static HRESULT WINAPI ResProtocol_Start(IInternetProtocol *iface, LPCWSTR szUrl,
     }
 
     url_dll = url + sizeof(wszRes)/sizeof(wszRes[0]);
-    if(!(url_file = strrchrW(url_dll, '/'))) {
+    if(!(res_type = strchrW(url_dll, '/'))) {
         WARN("wrong url: %s\n", debugstr_w(url));
         IInternetProtocolSink_ReportResult(pOIProtSink, MK_E_SYNTAX, 0, NULL);
         heap_free(url);
         return MK_E_SYNTAX;
     }
 
+    *res_type++ = 0;
+    if ((url_file = strchrW(res_type, '/'))) {
         *url_file++ = 0;
-    hdll = LoadLibraryExW(url_dll, NULL, LOAD_LIBRARY_AS_DATAFILE);
-    if(!hdll) {
-        if (!(res_type = strrchrW(url_dll, '/'))) {
-            WARN("Could not open dll: %s\n", debugstr_w(url_dll));
-            IInternetProtocolSink_ReportResult(pOIProtSink, HRESULT_FROM_WIN32(GetLastError()), 0, NULL);
-            heap_free(url);
-            return HRESULT_FROM_WIN32(GetLastError());
+    }else {
+        url_file = res_type;
+        res_type = MAKEINTRESOURCEW(RT_HTML);
     }
-        *res_type++ = 0;
 
     hdll = LoadLibraryExW(url_dll, NULL, LOAD_LIBRARY_AS_DATAFILE);
     if(!hdll) {
@@ -656,7 +653,6 @@ static HRESULT WINAPI ResProtocol_Start(IInternetProtocol *iface, LPCWSTR szUrl,
         heap_free(url);
         return HRESULT_FROM_WIN32(GetLastError());
     }
-    }
 
     TRACE("trying to find resource type %s, name %s\n", debugstr_w(res_type), debugstr_w(url_file));
 
@@ -665,7 +661,7 @@ static HRESULT WINAPI ResProtocol_Start(IInternetProtocol *iface, LPCWSTR szUrl,
         LPWSTR endpoint = NULL;
         DWORD file_id = strtolW(url_file, &endpoint, 10);
         if(endpoint == url_file+strlenW(url_file))
-            src = FindResourceW(hdll, MAKEINTRESOURCEW(file_id), MAKEINTRESOURCEW(RT_HTML));
+            src = FindResourceW(hdll, MAKEINTRESOURCEW(file_id), res_type);
 
         if(!src) {
             WARN("Could not find resource\n");