Fixed bug for macos kill_as_sudo

v2rayN/ServiceLib/Sample/kill_as_sudo_osx_sh

@@ -18,8 +18,8 @@ if ! [[ "$PID" =~ ^[0-9]+$ ]]; then
     exit 1
 fi
 
-# Check if the process exists
-if ! ps -p $PID > /dev/null; then
+# Check if the process exists - using kill -0 which is more reliable on macOS
+if ! kill -0 $PID 2>/dev/null; then
     echo "Warning: No process found with PID $PID"
     exit 0
 fi
@@ -27,9 +27,9 @@ fi
 # Recursive function to find and kill all descendant processes
 kill_descendants() {
     local parent=$1
-    # Use ps -eo pid,ppid for macOS compatibility
-    local children=$(ps -eo pid=,ppid= | awk -v ppid=$parent '$2==ppid {print $1}')
-    
+    # Use ps -axo for macOS to ensure all processes are included
+    local children=$(ps -axo pid=,ppid= | awk -v ppid=$parent '$2==ppid {print $1}')
+
     echo "Processing children of PID: $parent..."
     for child in $children; do
         kill_descendants "$child"