Fix a couple of instances of mix-and-matched @synthesize getters/setters

As part of ongoing work for ARC conversion (brotherbard#5)

Author: rowanj

PBGitHistoryController.m

@@ -44,7 +44,7 @@ - (void)saveSplitViewPosition;
 
 
 @implementation PBGitHistoryController
-@synthesize selectedCommitDetailsIndex, webCommit, gitTree, commitController, refController;
+@synthesize webCommit, gitTree, commitController, refController;
 @synthesize searchController;
 @synthesize commitList;
 @synthesize treeController;
@@ -187,6 +187,11 @@ - (void) setSelectedCommitDetailsIndex:(int)detailsIndex
 	[self updateKeys];
 }
 
+- (int) selectedCommitDetailsIndex
+{
+	return selectedCommitDetailsIndex;
+}
+
 - (void) updateStatus
 {
 	self.isBusy = repository.revisionList.isUpdating;

PBGitIndex.m

@@ -56,8 +56,6 @@ - (void)postOperationFailed:(NSString *)description;
 
 @implementation PBGitIndex
 
-@synthesize amend;
-
 - (id)initWithRepository:(PBGitRepository *)theRepository workingDirectory:(NSURL *)theWorkingDirectory
 {
 	if (!(self = [super init]))
@@ -113,6 +111,11 @@ - (void)setAmend:(BOOL)newAmend
 
 }
 
+- (BOOL) amend
+{
+	return amend;
+}
+
 - (void)refresh
 {
 	// If we were already refreshing the index, we don't want

PBSourceViewItem.m

@@ -11,7 +11,7 @@
 #import "PBGitRef.h"
 
 @implementation PBSourceViewItem
-@synthesize parent, title, isGroupItem, children, revSpecifier, isUncollapsible;
+@synthesize parent, isGroupItem, children, revSpecifier, isUncollapsible;
 @dynamic icon;
 
 - (id)init
@@ -122,6 +122,11 @@ - (NSString *)title
 	return [[revSpecifier description] lastPathComponent];
 }
 
+- (void) setTitle:(NSString *)_title
+{
+	title = [_title retain];
+}
+
 - (NSString *) stringValue
 {
 	return self.title;