Fix possible memory overrun when reading broken character set files

sql/mysqld.cc:
  Safety fix.

1 files changed, 1 insertions, 1 deletions

diff --git a/mysys/charset.c b/mysys/charset.c
index 9d9ede2b0c4..4cd32e7e3da 100644
--- a/mysys/charset.c
+++ b/mysys/charset.c
@@ -85,7 +85,7 @@ static my_bool get_word(struct simpleconfig_buf_st *fb, char *buf)
     endptr = fb->buf;
   }
 
-  while (!isspace(*endptr))
+  while (*endptr && !isspace(*endptr))
     *buf++= *endptr++;
   *buf=0;
   fb->p = endptr;