grep: fix recently-introduced performance glitch

* src/grep.c (main): Do not double-increment update_patterns.
update_patterns increments n_patterns now; do not increment it
again, as the incorrect count would hurt performance heuristics later.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/grep.c b/src/grep.c
index 1453b14a..11856d86 100644
--- a/src/grep.c
+++ b/src/grep.c
@@ -2881,7 +2881,6 @@ main (int argc, char **argv)
       ptrdiff_t patlen = strlen (keys);
       keys[patlen] = '\n';
       keycc = update_patterns (keys, 0, patlen + 1, "");
-      n_patterns++;
     }
   else
     usage (EXIT_TROUBLE);