Description: fix off-by-paren in dcc_gcc_rewrite_fqn buffer sizing
 src/compile.c's dcc_gcc_rewrite_fqn() allocates a buffer for
 "<target>-<argv[0]>\0" but writes strlen(argv[0] + 1) — pointer
 arithmetic *then* strlen, which under-allocates by 2 bytes and trips
 glibc FORTIFY_SOURCE=2 with "*** buffer overflow detected ***"
 on any `distcc gcc …` invocation.
 Intent was strlen(argv[0]) + 1 (length plus terminator).
Bug-reauktion: marfrit/marfrit-packages#3
Author: Markus Fritsche <mfritsche@reauktion.de>

--- a/src/compile.c
+++ b/src/compile.c
@@ -579,7 +579,7 @@ static int dcc_gcc_rewrite_fqn(char **argv)
         return -ENOENT;


-    newcmd_len = strlen(target_with_vendor) + 1 + strlen(argv[0] + 1);
+    newcmd_len = strlen(target_with_vendor) + 1 + strlen(argv[0]) + 1;
     newcmd = malloc(newcmd_len);
     if (!newcmd)
         return -ENOMEM;