Hide the storage of PBGitRef.ref

Author: rowanj

Classes/git/PBGitRef.h

@@ -20,9 +20,7 @@ extern NSString * const kGitXBranchRefPrefix;
 extern NSString * const kGitXRemoteRefPrefix;
 
 
-@interface PBGitRef : NSObject <PBGitRefish> {
-	NSString* ref;
-}
+@interface PBGitRef : NSObject <PBGitRefish>
 
 // <PBGitRefish>
 - (NSString *) refishName;
@@ -46,6 +44,7 @@ extern NSString * const kGitXRemoteRefPrefix;
 
 + (PBGitRef*) refFromString: (NSString*) s;
 - (PBGitRef*) initWithString: (NSString*) s;
-@property(readonly) NSString* ref;
+
+@property(nonatomic, strong, readonly) NSString* ref;
 
 @end

Classes/git/PBGitRef.m

@@ -18,6 +18,11 @@
 NSString * const kGitXBranchRefPrefix = @"refs/heads/";
 NSString * const kGitXRemoteRefPrefix = @"refs/remotes/";
 
+@interface PBGitRef ()
+
+@property(nonatomic, strong) NSString* ref;
+
+@end
 
 @implementation PBGitRef