bc: optimize bc_vec_concat()

function                                             old     new   delta
bc_vec_concat                                         71      66      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/miscutils/bc.c b/miscutils/bc.c
index afd5c8d0e..71022569e 100644
--- a/miscutils/bc.c
+++ b/miscutils/bc.c
@@ -1165,13 +1165,14 @@ static void bc_vec_string(BcVec *v, size_t len, const char *str)
 
 static void bc_vec_concat(BcVec *v, const char *str)
 {
-        size_t len;
+        size_t len, slen;
 
         if (v->len == 0) bc_vec_pushZeroByte(v);
 
-        len = v->len + strlen(str);
+        slen = strlen(str);
+        len = v->len + slen;
 
-        if (v->cap < len) bc_vec_grow(v, len - v->len);
+        if (v->cap < len) bc_vec_grow(v, slen);
         strcpy(v->v + v->len - 1, str);
 
         v->len = len;