Fix compiler compatibility issue with older Xcode versions

Source/SPFavoriteTextFieldCell.h

@@ -33,6 +33,7 @@
 @interface SPFavoriteTextFieldCell : ImageAndTextCell
 {
 	BOOL drawsDividerUnderCell;
+	NSColor *labelColor;
 }
 
 - (BOOL)drawsDividerUnderCell;

Source/SPFavoriteTextFieldCell.m

@@ -78,22 +78,22 @@ - (void)setDrawsDividerUnderCell:(BOOL)drawsDivider
 
 - (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView
 {
-	if([self labelColor]) {
+	if(labelColor) {
 		CGFloat round = (cellFrame.size.height/2);
 		NSBezierPath *bg = [NSBezierPath bezierPathWithRoundedRect:cellFrame xRadius:round yRadius:round];
 
 		if(isOSAtLeast10_10_0()) {
 			CGFloat h,s,b,a;
-			[[self labelColor] getHue:&h saturation:&s brightness:&b alpha:&a];
+			[labelColor getHue:&h saturation:&s brightness:&b alpha:&a];
 
 			[[NSColor colorWithCalibratedHue:h saturation:s*1.21 brightness:b*1.1 alpha:a] set];
 			[bg fill];
 		}
 		else {
 			NSGradient * gradient = [[NSGradient alloc] initWithColorsAndLocations:
-									 [[self labelColor] highlightWithLevel:0.33], 0.0,
-									 [self labelColor], 0.5,
-									 [[self labelColor] shadowWithLevel:0.15], 1.0, nil];
+									 [labelColor highlightWithLevel:0.33], 0.0,
+									  labelColor, 0.5,
+									 [labelColor shadowWithLevel:0.15], 1.0, nil];
 			[gradient drawInBezierPath:bg angle:90.0];
 			[gradient release];
 		}