Fix breakpoint_set_restart test for Windows

[amccarth]

Summary

When run with the multiprocess test runner, the getchar() trick doesn't work, so ninja check-lldb would fail on this test, but running the test directly worked fine.

This replaces the getchar() call with an infinite loop.

Thanks to Pavel for the insight.

[ovyalov]

packages/Python/lldbsuite/test/functionalities/breakpoint/breakpoint_set_restart/main.cpp

11

You may remove iostream since getchar is no longer needed.

[amccarth]

packages/Python/lldbsuite/test/functionalities/breakpoint/breakpoint_set_restart/main.cpp

11

Done since getchar actually comes from stdio.h anyway.

packages/Python/lldbsuite/test/functionalities/breakpoint/breakpoint_set_restart/main.cpp

 //===-- main.cpp ------------------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
+#include <chrono>
 #include <iostream>
 #include <stdio.h>
+#include <thread>
+
 
 int main(int argc, char const *argv[])
 {
-    getchar();
+    static bool done = false;
+    while (!done)
+    {
+      std::this_thread::sleep_for(std::chrono::milliseconds{100});
+    }
     printf("Set a breakpoint here.\n");
     return 0;
 }