several minor wallet server fixes

lbrynet/extras/daemon/json_response_encoder.py

@@ -193,7 +193,7 @@ class JSONResponseEncoder(JSONEncoder):
 
     def encode_claim_meta(self, meta):
         for key, value in meta.items():
-            if key.endswith('_amount') or key.startswith('trending_'):
+            if key.endswith('_amount'):
                 if isinstance(value, int):
                     meta[key] = dewies_to_lbc(value)
         return meta

lbrynet/schema/compat.py

@@ -15,8 +15,10 @@ def from_old_json_schema(claim, payload: bytes):
         raise DecodeError('Could not parse JSON.')
     stream = claim.stream
     stream.source.sd_hash = value['sources']['lbry_sd_hash']
-    stream.source.media_type = value.get(
-        'content_type', value.get('content-type', 'application/octet-stream'))
+    stream.source.media_type = (
+            value.get('content_type', value.get('content-type')) or
+            'application/octet-stream'
+    )
     stream.title = value.get('title', '')
     stream.description = value.get('description', '')
     if value.get('thumbnail', ''):

lbrynet/wallet/server/db.py

@@ -488,10 +488,9 @@ class SQLDB:
                         postfix, value = ops[value[0]], int(value[1:])
                 constraints[f'claim.{constraint}{postfix}'] = value
 
-        if 'is_controlling' in constraints:
+        if constraints.pop('is_controlling', False):
             if {'sequence', 'amount_order'}.isdisjoint(constraints):
                 constraints['claimtrie.claim_hash__is_not_null'] = ''
-            del constraints['is_controlling']
         if 'sequence' in constraints:
             constraints['order_by'] = 'claim.activation_height ASC'
             constraints['offset'] = int(constraints.pop('sequence')) - 1