From 66336106cadab94b459e20193138c3d14b8966fe Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Tue, 8 Feb 2022 17:43:26 -0500
Subject: [PATCH] When device isn't specified, pass nullptr.  Currently zmc
 device probing is broken. This fixes it. Not needed for master.

---
 src/zmu.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/zmu.cpp b/src/zmu.cpp
index 45a38ecb0..e5dd32a59 100644
--- a/src/zmu.cpp
+++ b/src/zmu.cpp
@@ -730,7 +730,7 @@ int main(int argc, char *argv[]) {
     if ( function & ZMU_QUERY ) {
 #if ZM_HAS_V4L
 			char vidString[0x10000] = "";
-			bool ok = LocalCamera::GetCurrentSettings(device.c_str(), vidString, v4lVersion, verbose);
+			bool ok = LocalCamera::GetCurrentSettings(device.empty()?nullptr:device.c_str(), vidString, v4lVersion, verbose);
 			printf("%s", vidString);
 			exit_zmu(ok ? 0 : -1);
 #else // ZM_HAS_V4L