GitGrapher: free pointers on dealloc

This frees the std vector and its contents on
dealloc. We also fresh up the header a bit

PBGitGrapher.h

@@ -12,15 +12,13 @@
 #import "PBGraphCellInfo.h"
 
 @interface PBGitGrapher : NSObject {
-	PBGraphCellInfo* previous;
+	PBGraphCellInfo *previous;
 	void *pl;
-	void *storage;
 	int curLane;
 
-	NSDictionary* refs;
-	PBGitRepository* repository;
+	NSDictionary *refs;
 }
 
-- (id) initWithRepository: (PBGitRepository*) repo;
-- (void) decorateCommit: (PBGitCommit *) commit;
+- (id) initWithRepository:(PBGitRepository *)repo;
+- (void) decorateCommit:(PBGitCommit *)commit;
 @end

PBGitGrapher.mm

@@ -25,12 +25,9 @@ using namespace std;
 - (id) initWithRepository: (PBGitRepository*) repo
 {
 	refs = repo.refs;
-	repository = repo;
-	pl = new std::list<PBGitLane>;
+	pl = new std::list<PBGitLane *>;
 
 	PBGitLane::resetColors();
-	//[PBGitLane resetColors];
-
 	return self;
 }
 
@@ -161,6 +158,13 @@ void add_line(struct PBGitGraphLine *lines, int *nLines, int upper, int from, in
 
 - (void) finalize
 {
+	std::list<PBGitLane *> *lanes = (std::list<PBGitLane *> *)pl;
+	std::list<PBGitLane *>::iterator it = lanes->begin();
+	for (; it != lanes->end(); ++it)
+		delete *it;
+
+	delete lanes;
+
 	[super finalize];
 }
 @end