Don't swallow the pull error by mistake

Fixes #149

Author: tiennou

Classes/Views/PBGitXMessageSheet.m

@@ -81,10 +81,11 @@ + (void)beginSheetWithError:(NSError *)error
 	if (taskError && taskError.domain == PBTaskErrorDomain) {
 		[messageParts addObject:NSLocalizedString(@"The underlying task failed:", @"PBGitXMessageSheet - task failed header")];
 		if (taskError.code == PBTaskNonZeroExitCodeError) {
-			NSString *message = NSLocalizedString(@"Return code: %d", @"PBGitXMessageSheet - task return code header");
+			NSString *message = NSLocalizedString(@"Return code: %@", @"PBGitXMessageSheet - task return code header");
 			message = [NSString stringWithFormat:message, taskError.userInfo[PBTaskTerminationStatusKey]];
 			[messageParts addObject:message];
 			message = NSLocalizedString(@"Output:", @"PBGitXMessageSheet - task output header");
+			message = [message stringByAppendingString:@"\n"];
 			message = [message stringByAppendingString:taskError.userInfo[PBTaskTerminationOutputKey]];
 			[messageParts addObject:message];
 		} else {

Classes/git/PBGitRepository.m

@@ -742,7 +742,7 @@ - (BOOL)pullBranch:(PBGitRef *)branchRef fromRemote:(PBGitRef *)remoteRef rebase
 
 	PBTask *task = [self taskWithArguments:arguments];
 	NSError *taskError = nil;
-	BOOL success = [task launchTask:error];
+	BOOL success = [task launchTask:&taskError];
 	if (!success) {
 		NSString *desc = NSLocalizedString(@"Pull failed", @"PBGitRepository - pull error description");
 		NSString *reason = [NSString stringWithFormat:NSLocalizedString(@"An error occurred while pulling remote \"%@\" to \"%@\".", @"PBGitRepostory - pull error reason"), remoteName, branchRef.shortName];