Ignore child processes so they don't stick around as defunct

renderdoc/os/posix/posix_process.cpp

@@ -309,6 +309,9 @@ static pid_t RunProcess(const char *app, const char *workingDir, const char *cmd
     }
   }
 
+  // don't care about child processes, just ignore them
+  signal(SIGCHLD, SIG_IGN);
+
   pid_t childPid = fork();
   if(childPid == 0)
   {