databases/gdbm: update GNU dbm port to version 1.25

Pull upstream commit to not set `errno' to ETIME (which does
not exist on FreeBSD) and preserve the original EINTR instead.

Reported by:	portscout

databases/gdbm/Makefile

@@ -1,5 +1,5 @@
 PORTNAME=	gdbm
-PORTVERSION=	1.24
+PORTVERSION=	1.25
 CATEGORIES=	databases
 MASTER_SITES=	GNU
 

databases/gdbm/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1719928583
-SHA256 (gdbm-1.24.tar.gz) = 695e9827fdf763513f133910bc7e6cfdb9187943a4fec943e57449723d2b8dbf
-SIZE (gdbm-1.24.tar.gz) = 1195931
+TIMESTAMP = 1742653915
+SHA256 (gdbm-1.25.tar.gz) = d02db3c5926ed877f8817b81cd1f92f53ef74ca8c6db543fbba0271b34f393ec
+SIZE (gdbm-1.25.tar.gz) = 1224180

databases/gdbm/files/patch-src_lock.c

@@ -0,0 +1,35 @@
+--- src/lock.c.orig	2025-03-06 16:24:09 UTC
++++ src/lock.c
+@@ -73,15 +73,10 @@ try_lock_flock (GDBM_FILE dbf, int nb)
+     {
+       return TRY_LOCK_OK;
+     }
+-  else if (errno == EWOULDBLOCK)
++  else if (errno == EWOULDBLOCK || errno == EINTR)
+     {
+       return TRY_LOCK_FAIL;
+     }
+-  else if (errno == EINTR)
+-    {
+-      errno = ETIME;
+-      return TRY_LOCK_FAIL;
+-    }
+ #endif
+   return TRY_LOCK_NEXT;
+ }
+@@ -116,7 +111,6 @@ try_lock_lockf (GDBM_FILE dbf, int nb)
+       switch (errno)
+ 	{
+ 	case EINTR:
+-	  errno = ETIME;
+ 	case EACCES:
+ 	case EAGAIN:
+ 	case EDEADLK:
+@@ -162,7 +156,6 @@ try_lock_fcntl (GDBM_FILE dbf, int nb)
+   switch (errno)
+     {
+     case EINTR:
+-      errno = ETIME;
+     case EACCES:
+     case EAGAIN:
+     case EDEADLK: