Don't run off the end of path if it ends in /.

OK op, sthen

diff --git a/usr.bin/patch/pch.c b/usr.bin/patch/pch.c
index a3e0a9c..7c65062 100644 (file)
--- a/usr.bin/patch/pch.c
+++ b/usr.bin/patch/pch.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pch.c,v 1.65 2023/07/12 15:44:47 florian Exp $        */
+/*     $OpenBSD: pch.c,v 1.66 2023/07/12 15:45:34 florian Exp $        */
 
 /*
  * patch - a program to apply diffs to original files
@@ -1484,7 +1484,8 @@ num_components(const char *path)
        size_t n;
        const char *cp;
 
-       for (n = 0, cp = path; (cp = strchr(cp, '/')) != NULL; n++, cp++) {
+       for (n = 0, cp = path; (cp = strchr(cp, '/')) != NULL; n++) {
+               cp++;
                while (*cp == '/')
                        cp++;           /* skip consecutive slashes */
        }