bash completion: Add --[no-]validate to "git send-email"

Signed-off-by: Teemu Likonen <[email protected]>
Signed-off-by: Shawn O. Pearce <[email protected]>

Author: tlikonen

contrib/completion/git-completion.bash

@@ -1141,7 +1141,8 @@ _git_send_email ()
 			--no-suppress-from --no-thread --quiet
 			--signed-off-by-cc --smtp-pass --smtp-server
 			--smtp-server-port --smtp-ssl --smtp-user --subject
-			--suppress-cc --suppress-from --thread --to"
+			--suppress-cc --suppress-from --thread --to
+			--validate --no-validate"
 		return
 		;;
 	esac