+--- ../cache/alpine-2.21/imap/src/dmail/dmail.c 2017-02-06 00:06:22.499218141 +0000
++++ ./imap/src/dmail/dmail.c 2017-04-25 11:09:01.144317637 +0000
+@@ -28,7 +28,6 @@
+ #include <pwd.h>
+ #include <errno.h>
+ #include <ctype.h>
+-extern int errno; /* just in case */
+ #include <sysexits.h>
+ #include <sys/file.h>
+ #include <sys/stat.h>
+--- ../cache/alpine-2.21/imap/src/tmail/tmail.c 2017-02-06 00:06:22.515218494 +0000
++++ ./imap/src/tmail/tmail.c 2017-04-25 11:08:37.468048959 +0000
+@@ -27,7 +27,6 @@
+ #include <pwd.h>
+ #include <errno.h>
+ #include <ctype.h>
+-extern int errno; /* just in case */
+ #include <sysexits.h>
+ #include <sys/file.h>
+ #include <sys/stat.h>
+--- ../cache/alpine-2.20/pico/osdep/filesys.c 2015-01-12 05:12:25.272177331 +0000
++++ ./pico/osdep/filesys.c 2016-12-11 00:14:46.945596542 +0000
+@@ -777,7 +777,6 @@
+ char *cb;
+ struct stat tsb, fsb;
+ EML eml;
+- extern int errno;
+
+ if(our_stat(a, &fsb) < 0){ /* get source file info */
+ eml.s = errstr(errno);