macosx: reset A to B loop when switching playlist items

modules/gui/macosx/CoreInteraction.h

@@ -63,6 +63,7 @@
 - (void)repeatOff;
 - (void)shuffle;
 - (void)setAtoB;
+- (void)resetAtoB;
 - (void)updateAtoB;
 
 - (void)volumeUp;

modules/gui/macosx/CoreInteraction.m

@@ -431,10 +431,14 @@ static VLCCoreInteraction *_o_sharedInstance = nil;
             timeB = var_GetTime(p_input, "time");
             vlc_object_release(p_input);
         }
-    } else {
-        timeA = 0;
-        timeB = 0;
-    }
+    } else
+        [self resetAtoB];
+}
+
+- (void)resetAtoB
+{
+    timeA = 0;
+    timeB = 0;
 }
 
 - (void)updateAtoB

modules/gui/macosx/intf.m

@@ -1298,6 +1298,7 @@ static VLCMain *_o_sharedMainInstance = nil;
 {
     [o_mainmenu setupMenus];
     [o_mainmenu updatePlaybackRate];
+    [[VLCCoreInteraction sharedInstance] resetAtoB];
 }
 
 - (void)updateMainWindow