$NetBSD: patch-clipboard.c,v 1.1 2017/08/16 15:18:24 jperkin Exp $

Avoid "Missing sentinel in function call" warnings.

--- clipboard.c.orig	2017-06-28 12:50:49.000000000 +0000
+++ clipboard.c
@@ -64,7 +64,7 @@ void exec_command(char *command) {
 		shell = "/bin/sh";
 	}
 
-	execlp(shell, shell, "-c", command, NULL);
+	execlp(shell, shell, "-c", command, (char *)0);
 }
 
 void clipboard_open(void)
@@ -91,10 +91,10 @@ void clipboard_open(void)
 			exec_command(clipboard_command);
 			die("Unable to copy contents to clipboard. Please make sure you have `xclip`, `xsel`, `pbcopy`, or `putclip` installed.");
 		} else {
-			execlp("xclip", "xclip", "-selection", "clipboard", "-in", NULL);
-			execlp("xsel", "xsel", "--clipboard", "--input", NULL);
-			execlp("pbcopy", "pbcopy", NULL);
-			execlp("putclip", "putclip", "--dos", NULL);
+			execlp("xclip", "xclip", "-selection", "clipboard", "-in", (char *)0);
+			execlp("xsel", "xsel", "--clipboard", "--input", (char *)0);
+			execlp("pbcopy", "pbcopy", (char *)0);
+			execlp("putclip", "putclip", "--dos", (char *)0);
 			die("Unable to copy contents to clipboard. Please make sure you have `xclip`, `xsel`, `pbcopy`, or `putclip` installed.");
 		}
 	}