Fix segfault when rpmbuild stumbles over an empty file list.

The "+ 1" is a remedy for xmalloc(0), which would return NULL.
Patch from OpenSuSE

diff --git a/build/files.c b/build/files.c
index f1d6a19..c38b0d3 100644 (file)
--- a/build/files.c
+++ b/build/files.c
@@ -1392,7 +1392,7 @@ static void genCpioListAndHeader(/*@partial@*/ FileList fl,
        : (int *)(fi->bnl + fi->fc);
 /*@=dependenttrans@*/
 
-    fi->apath = xmalloc(fi->fc * sizeof(*fi->apath) + apathlen);
+    fi->apath = xmalloc(fi->fc * sizeof(*fi->apath) + apathlen + 1);
     a = (char *)(fi->apath + fi->fc);
     *a = '\0';