Prevent Future resolved more than once errors

Different node versions have different behaviors of timers. In some cases, on some machines we throw error that future is resolved more than once.
Prevent it.

Author: rosen-vladimirov

mobile/ios/ios-core.ts

@@ -1213,7 +1213,7 @@ export class GDBServer implements Mobile.IGDBServer {
 					clearInterval(timer);
 				}
 
-				if (!retryCount) {
+				if (!retryCount && !future.isResolved()) {
 					future.throw(new Error("Unable to kill the application."));
 				}
 			}, 1000);
@@ -1225,7 +1225,9 @@ export class GDBServer implements Mobile.IGDBServer {
 				isDataReceived = true;
 				this.socket.removeListener("data", dataCallback);
 				clearInterval(timer);
-				future.return(data.toString());
+				if(!future.isResolved()) {
+					future.return(data.toString());
+				}
 			}
 		};