Fix:Core:Don't crash on failure to open log file

git-svn-id: https://navit.svn.sourceforge.net/svnroot/navit/trunk@1077 ffa7fe5e-494d-0410-b361-a75ebd5db220

diff --git a/navit/navit/log.c b/navit/navit/log.c
index 0101d11..378b446 100644 (file)
--- a/navit/navit/log.c
+++ b/navit/navit/log.c
@@ -107,6 +107,8 @@ log_flush(struct log *this_)
                        return;
                log_open(this_);
        }
+       if (! this_->f)
+               return;
        if (this_->empty) {
                if (this_->header.len) 
                        fwrite(this_->header.data, 1, this_->header.len, this_->f);