[PATCH] sdiff: fix comparision between signed and unsiged warning

[Alexander Kuleshov]

This diff fixes

edit.c: In function 'eparse':
edit.c:149: warning: comparision between signed and unsigned

warning during compilation.

Index: usr.bin/sdiff/edit.c
===================================================================
RCS file: /cvs/src/usr.bin/sdiff/edit.c,v
retrieving revision 1.20
diff -u -p -u -r1.20 edit.c
--- usr.bin/sdiff/edit.c        26 Nov 2013 21:08:12 -0000      1.20
+++ usr.bin/sdiff/edit.c        31 May 2017 09:48:47 -0000
@@ -146,7 +146,7 @@ RIGHT:
 
                len = strlen(text);
                if ((nwritten = write(fd, text, len)) == -1 ||
-                   nwritten != len) {
+                   nwritten != (ssize_t)len) {
                        warn("error writing to temp file");
                        cleanup(filename);
                }