Sync changes from IL2CPP 7071db69fe79c82b32c928e94c61b8af145e7697

Fix for case 1011160: Step Out from an Update function behaves
incorrectly.  If we are stepping out of the only managed frame
in the call stack, cancel creating the step request and just continue.

Author: joncham

mono/mini/debugger-agent.c

@@ -9134,6 +9134,21 @@ event_commands (int command, guint8 *p, guint8 *end, Buffer *buf)
 				return err;
 			}
 
+#if RUNTIME_IL2CPP
+            {
+                DebuggerTlsData* tls;
+                mono_loader_lock();
+                tls = (DebuggerTlsData *)mono_g_hash_table_lookup(thread_to_tls, THREAD_TO_INTERNAL(step_thread));
+                mono_loader_unlock();
+
+                if (tls->il2cpp_context.frameCount == 1 && depth == STEP_DEPTH_OUT)
+                {
+                    g_free(req);
+                    return ERR_NONE;
+                }
+            }
+#endif
+
 			err = ss_create (THREAD_TO_INTERNAL (step_thread), size, depth, filter, req);
 			if (err != ERR_NONE) {
 				g_free (req);