Use OJ's suggestion for fail_with

Author: RageLtMan

modules/exploits/windows/local/ps_wmi_exec.rb

@@ -120,14 +120,14 @@ def build_script
   def exploit
 
     # Make sure we meet the requirements before running the script
-    # Shell sessions can't kill PIDs
-    if !have_powershell?
-      print_error("Incompatible environment - PowerShell is required")
-      return
+    unless have_powershell?
+      fail_with(Failure::BadConfig, 'PowerShell not found')
     end
+
+
     # SYSTEM doesnt have credentials on remote hosts
     if is_system? and datastore['RHOSTS']
-      print_error("Cannot run as system")
+      print_error("Cannot run as local system on remote hosts")
       return 0
     end
 
@@ -137,7 +137,7 @@ def exploit
       print_good script
       return
     end
-    #
+
     print_good("#{datastore["RHOSTS"] ? psh_exec(script) : psh_exec(script,true,false)}")
     vprint_good('PSH WMI exec is complete.')
   end