Minor tweaks to request data handling (refs GH-617)

Author: dcramer

raven/contrib/flask.py

@@ -173,12 +173,10 @@ def get_http_info(self, request):
         """
         Determine how to retrieve actual data by using request.mimetype.
         """
-
-        retriever = self.get_form_data
-
         if self.is_json_type(request.mimetype):
             retriever = self.get_json_data
-
+        else:
+            retriever = self.get_form_data
         return self.get_http_info_with_retriever(request, retriever)
 
     def is_json_type(self, content_type):
@@ -190,11 +188,13 @@ def get_form_data(self, request):
     def get_json_data(self, request):
         return request.data
 
-    def get_http_info_with_retriever(self, request,
-                                     retriever=get_form_data):
+    def get_http_info_with_retriever(self, request, retriever=None):
         """
         Exact method for getting http_info but with form data work around.
         """
+        if retriever is None:
+            retriever = self.get_form_data
+
         urlparts = _urlparse.urlsplit(request.url)
 
         try: