Keep the macro buffer terminated on append

- This isn't strictly needed as we're terminating the buffers "just in
  case" all over the place but handling this centrally might allow
  some day eliminating the other fluff...

1 files changed, 2 insertions, 1 deletions

diff --git a/rpmio/macro.c b/rpmio/macro.c
index 4c641fcd5..238ebcdde 100644
--- a/rpmio/macro.c
+++ b/rpmio/macro.c
@@ -442,6 +442,7 @@ static void mbAppend(MacroBuf mb, char c)
 	mb->nb += MACROBUFSIZ;
     }
     mb->buf[mb->tpos++] = c;
+    mb->buf[mb->tpos] = '\0';
     mb->nb--;
 }
 
@@ -452,7 +453,7 @@ static void mbAppendStr(MacroBuf mb, const char *str)
 	mb->buf = xrealloc(mb->buf, mb->tpos + mb->nb + MACROBUFSIZ + len + 1);
 	mb->nb += MACROBUFSIZ + len;
     }
-    memcpy(mb->buf+mb->tpos, str, len);
+    memcpy(mb->buf+mb->tpos, str, len + 1);
     mb->tpos += len;
     mb->nb -= len;
 }