From 76d5ab8b9a4dfff75554753b9c11d997bdc7527e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pedro=20J=2E=20Est=C3=A9banez?= <pedrojrulez@gmail.com>
Date: Fri, 19 Feb 2021 11:37:45 +0100
Subject: [PATCH] Restore needed null check in OS_Unix::execute()

---
 drivers/unix/os_unix.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/unix/os_unix.cpp b/drivers/unix/os_unix.cpp
index ac233889028..44ce14b32de 100644
--- a/drivers/unix/os_unix.cpp
+++ b/drivers/unix/os_unix.cpp
@@ -298,9 +298,13 @@ Error OS_Unix::execute(const String &p_path, const List<String> &p_arguments, bo
 
 		while (fgets(buf, 65535, f)) {
 
-			p_pipe_mutex->lock();
+			if (p_pipe_mutex) {
+				p_pipe_mutex->lock();
+			}
 			(*r_pipe) += String::utf8(buf);
-			p_pipe_mutex->unlock();
+			if (p_pipe_mutex) {
+				p_pipe_mutex->unlock();
+			}
 		}
 		int rv = pclose(f);
 		if (r_exitcode)