updated mcbe-backup to not fail if it gets no output from initial command

src/mcbe/assets/bin/mcbe-backup

@@ -28,12 +28,6 @@ if [[ $status != active ]]; then
     exit
 fi
 
-# check if save is currently in progress
-if [[ $(mcbe-exec save query) != "A previous save has not been completed." ]]; then
-    echo "Error: a save seems to be currently in progress. Did the previous save run correctly?"
-    exit 1
-fi
-
 # create backup dir
 if [[ ! -d "$backup_dir" ]]; then
     echo "Creating directory \"$backup_dir\" ..."
@@ -42,7 +36,12 @@ fi
 cd "$backup_dir"
 
 # prepare backup of active world
-mcbe-exec save hold
+status=$(mcbe-exec save hold)
+if [[ $status == "The command is already running" ]]; then
+    echo "Error: a save seems to be currently in progress. Did the previous save run correctly?"
+    mcbe-exec save resume
+    exit 1
+fi
 timeout=0
 buffer=$(mcbe-exec save query)
 until echo "$buffer" | grep -q 'Data saved'; do