Subject: [PATCH] fix memory leak in asm/nasm.c

Bug analysis:
	When the first argument of nasm is a pathname without '.', forget to free outname before set outname = "nasm.out";.

bugzilla: https://bugzilla.nasm.us/show_bug.cgi?id=3392800
Signed-off-by: Szu-Wei Tseng <13579and24680@gmail.com>

Author: a13579and2468

asm/nasm.c

@@ -607,6 +607,7 @@ int main(int argc, char **argv)
     if (!outname && !(operating_mode & OP_PREPROCESS)) {
         outname = filename_set_extension(inname, ofmt->extension);
         if (!strcmp(outname, inname)) {
+            nasm_free((char *)outname);
             outname = "nasm.out";
             nasm_warn(WARN_OTHER, "default output file same as input, using `%s' for output\n", outname);
         }