Remove inPBRepo argument since we have it as an instance variable already

Author: ksuther

Classes/git/PBGitRevList.m

@@ -75,7 +75,7 @@ - (void)loadRevisionsWithCompletionBlock:(void (^)(void))completionBlock
 		GTEnumerator *enu = [[GTEnumerator alloc] initWithRepository:repo error:&error];
 
 		[weakSelf setupEnumerator:enu forRevspec:weakSelf.currentRev];
-		[weakSelf addCommitsFromEnumerator:enu inPBRepo:pbRepo operation:weakParseOperation];
+		[weakSelf addCommitsFromEnumerator:enu operation:weakParseOperation];
 	}];
 	[parseOperation setCompletionBlock:completionBlock];
 
@@ -193,7 +193,7 @@ - (void)setupEnumerator:(GTEnumerator *)enumerator
 	}
 }
 
-- (void)addCommitsFromEnumerator:(GTEnumerator *)enumerator inPBRepo:(PBGitRepository *)pbRepo operation:(NSOperation *)operation
+- (void)addCommitsFromEnumerator:(GTEnumerator *)enumerator operation:(NSOperation *)operation
 {
 	PBGitGrapher *g = [[PBGitGrapher alloc] init];
 	__block NSDate *lastUpdate = [NSDate date];
@@ -214,6 +214,12 @@ - (void)addCommitsFromEnumerator:(GTEnumerator *)enumerator inPBRepo:(PBGitRepos
 				return;
 			}
 
+			PBGitRepository *pbRepo = self.repository;
+
+			if (pbRepo == nil) {
+				return;
+			}
+
 			PBGitCommit *newCommit = nil;
 			PBGitCommit *cachedCommit = [self.commitCache objectForKey:oid];
 			if (cachedCommit) {