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| author |  Morgan Chen <morganchen12@gmail.com> | 2018-02-02 11:43:14 -0800 |
|---|---|---|
| committer |  GitHub <noreply@github.com> | 2018-02-02 11:43:14 -0800 |
| commit | 070c0ea92fa8bf37bc9e5479aa2e769f796d5de4 (patch) | |
| tree | 1127ddb0d1ac3795bd817331f0287b8baac6cfd2 | |
| parent | 13f572ea2c57e2cd4c9c2c7c1a7c3b7f338f9fdc (diff) | |
| parent | 7422f6218291c66f850c81a1c9ec68516c936e87 (diff) | |
Merge pull request #746 from morganchen12/unguarded-block
fix null block execution crash
| -rw-r--r-- | Firestore/Source/Core/FSTFirestoreClient.mm | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Firestore/Source/Core/FSTFirestoreClient.mm b/Firestore/Source/Core/FSTFirestoreClient.mm index fff644d..5986b5b 100644 --- a/Firestore/Source/Core/FSTFirestoreClient.mm +++ b/Firestore/Source/Core/FSTFirestoreClient.mm @@ -253,9 +253,11 @@ NS_ASSUME_NONNULL_BEGIN completion:(nullable FSTVoidErrorBlock)completion { [self.workerDispatchQueue dispatchAsync:^{ if (mutations.count == 0) { - [self.userDispatchQueue dispatchAsync:^{ - completion(nil); - }]; + if (completion) { + [self.userDispatchQueue dispatchAsync:^{ + completion(nil); + }]; + } } else { [self.syncEngine writeMutations:mutations completion:^(NSError *error) { |