script: Rework assert to pass coverity.

It does work differently for non debug builds, but we don't care
because we reset the value anyway.
This way maybe more descriptive and does avoid a write.

diff --git a/src/script.c b/src/script.c
index 2e9a2f9b37e3128c88263fb0a9771edaee7273b5..3cb33b6e709b3351a21d058c35aa52074065b333 100644 (file)
--- a/src/script.c
+++ b/src/script.c
@@ -489,7 +489,7 @@ dumplease:
                        nenv++;
                }
        }
-       assert(*--bufp == '\0');
+       assert(*(bufp - 1) == '\0');
 
        if (ctx->script_envlen < nenv) {
                env = reallocarray(ctx->script_env, nenv + 1, sizeof(*env));