Rename exception to error, raise_on_error to raise_if_error

Author: Sjord

Diff for: git/remote.py

@@ -122,14 +122,14 @@ def __new__(cls) -> 'IterableList[IterableObj]':
 
     def __init__(self) -> None:
         super().__init__('push_infos')
-        self.exception = None
+        self.error = None
 
-    def raise_on_error(self):
+    def raise_if_error(self):
         """
         Raise an exception if any ref failed to push.
         """
-        if self.exception:
-            raise self.exception
+        if self.error:
+            raise self.error
 
 
 class PushInfo(IterableObj, object):