Make this patch apply properly.

Bug:
Submitted by:	Jon Sharp <sharpjon@gmail.com>
		Ron Parker <rdp@inthefaith.net>
Reviewed by:
Approved by:
Obtained from:

git-svn-id: https://svn.macports.org/repository/macports/trunk/dports@15047 d073be05-634f-4543-b044-5fe20cf6d1d6

mail/imap-uw/files/patch-src-osdep-unix-Makefile

@@ -8,7 +8,7 @@ diff -ruP src/osdep/unix-orig/Makefile src/osdep/unix/Makefile
 -	 CRXTYPE=nfs \
 +	 CHECKPW=osx CRXTYPE=nfs \
  	 SPOOLDIR=/var/spool MAILSPOOL=/var/mail \
--	 BASECFLAGS="-g -O"
+-	 BASECFLAGS="-g -O -Wno-pointer-sign"
 +	 BASECFLAGS="-g -O" \
 +	 EXTRALDFLAGS="-framework DirectoryService"