Fix broken patch that prevents clang builds.

archivers/zoo/patches/patch-bsd_c

@@ -1,33 +1,37 @@
-$OpenBSD: patch-bsd_c,v 1.1 2006/04/07 07:40:18 pvalchev Exp $
---- bsd.c.orig	Fri Apr 30 22:21:53 1993
-+++ bsd.c	Fri Apr  7 01:38:55 2006
-@@ -69,8 +69,16 @@ ZOOFILE f;
- }
- 
- /* Function gettz() returns the offset from GMT in seconds */
--long gettz()
-+long gettz(t)
-+#if defined(__OpenBSD__)
-+time_t t;
-+#else
-+long t;
-+#endif
- {
-+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
-+   return -localtime(&t)->tm_gmtoff;
-+#else
+$OpenBSD: patch-bsd_c,v 1.2 2017/04/12 23:17:57 jca Exp $
+--- bsd.c.orig	Sat May  1 06:21:53 1993
++++ bsd.c	Thu Apr 13 01:16:06 2017
+@@ -74,26 +74,16 @@ long gettz()
  #define SEC_IN_DAY	(24L * 60L * 60L)
  #define INV_VALUE		(SEC_IN_DAY + 1L)
  	static long retval = INV_VALUE;	     /* cache, init to impossible value */
-@@ -95,6 +103,7 @@ long gettz()
+-#ifndef __386BSD__
+-   struct timeval tp;
+-   struct timezone tzp;
+-#else
+    time_t lt;
+    struct tm *tm;
+-#endif
++
+ 	if (retval != INV_VALUE)				 /* if have cached value, return it */
+ 		return retval;
+-#ifndef __386BSD__
+-   gettimeofday (&tp, &tzp);              /* specific to 4.3BSD */
+-   /* return (tzp.tz_minuteswest * 60); */ /* old incorrect code */
+-	/* Timezone fix thanks to Bill Davidsen <wedu@ge-crd.ARPA> */
+-	/* !! - ache@hq.demos.su */
+-	retval = tzp.tz_minuteswest * 60 - (tzp.tz_dsttime != 0) * 3600L;
+-#else
++
+ 	time(&lt);
+ 	tm = localtime(&lt);
  	retval = -tm->tm_gmtoff;
- #endif
+-#endif
++
  	return retval;
-+#endif
  }
  
- /* Standard UNIX-compatible time routines */
-@@ -103,15 +112,19 @@ long gettz()
+@@ -103,15 +93,19 @@ long gettz()
  /* Standard UNIX-specific file attribute routines */
  #include "nixmode.i"