Adding no SMBv1 error handler for ms17-010 exploit

modules/exploits/windows/smb/ms17_010_eternalblue.rb

@@ -164,6 +164,10 @@ class MetasploitModule < Msf::Exploit::Remote
       # Step 1: Connect to IPC$ share
       print_status("Connecting to target for exploitation.")
       client, tree, sock, os = smb1_anonymous_connect_ipc()
+    rescue
+      # Error handler in case SMBv1 disabled on target
+      raise EternalBlueError, 'Could not make SMBv1 connection'
+    else
       print_good("Connection established for exploitation.")
 
       if verify_target(os)