Fix build with Clang

This fixes #313.

src/libeinfo/libeinfo.c

@@ -15,7 +15,7 @@
  *    except according to the terms contained in the LICENSE file.
  */
 
-const char libeinfo_copyright[] = "Copyright (c) 2007-2008 Roy Marples";
+static const char libeinfo_copyright[] = "Copyright (c) 2007-2008 Roy Marples";
 
 #include <sys/types.h>
 #include <sys/ioctl.h>

src/librc/librc-daemon.c

@@ -611,7 +611,7 @@ rc_service_daemons_crashed(const char *service)
 				i = 0;
 				TAILQ_FOREACH(s, list, entries)
 				    argv[i++] = s->value;
-				argv[i] = '\0';
+				argv[i] = NULL;
 			}
 		}
 

src/librc/librc.c

@@ -15,7 +15,7 @@
  *    except according to the terms contained in the LICENSE file.
  */
 
-const char librc_copyright[] = "Copyright (c) 2007-2008 Roy Marples";
+static const char librc_copyright[] = "Copyright (c) 2007-2008 Roy Marples";
 
 #include "queue.h"
 #include "librc.h"

src/rc/do_e.c

@@ -35,9 +35,9 @@
 
 const char *applet = NULL;
 
-static int syslog_decode(char *name, CODE *codetab)
+static int syslog_decode(char *name, const CODE *codetab)
 {
-	CODE *c;
+	const CODE *c;
 
 	if (isdigit((unsigned char)*name))
 		return atoi(name);

src/rc/rc.c

@@ -20,7 +20,7 @@
  *    except according to the terms contained in the LICENSE file.
  */
 
-const char rc_copyright[] = "Copyright (c) 2007-2008 Roy Marples";
+static const char rc_copyright[] = "Copyright (c) 2007-2008 Roy Marples";
 
 #include <sys/types.h>
 #include <sys/ioctl.h>

src/rc/start-stop-daemon.c

@@ -669,7 +669,7 @@ int main(int argc, char **argv)
 					nav[len++] = p;
 				for (i = 0; i < opt; i++)
 					nav[i + len] = argv[i];
-				nav[i + len] = '\0';
+				nav[i + len] = NULL;
 			}
 		}
 	}