Remove the last command mark when the current command is aborted, as happens...

Remove the last command mark when the current command is aborted, as happens when you resize the window at a bash prompt. Issue 4504

sources/VT100Screen.m

@@ -3630,6 +3630,12 @@ static NSString *const kInilineFileInset = @"inset";  // NSValue of NSEdgeInsets
 - (void)terminalAbortCommand {
     DLog(@"FinalTerm: terminalAbortCommand");
+    VT100ScreenMark *screenMark = [self lastCommandMark];
+    if (screenMark) {
+        DLog(@"Removing last command mark %@", screenMark);
+        [intervalTree_ removeObject:screenMark];
+    }
+
     commandStartX_ = commandStartY_ = -1;
     [delegate_ screenCommandDidEndWithRange:VT100GridCoordRangeMake(-1, -1, -1, -1)];
 }