Bash-5.2 patch 31: fix memory leak in optimized $(<file) expansion

builtins/evalstring.c

@@ -762,6 +762,9 @@ open_redir_file (r, fnp)
 
   if (fnp)
     *fnp = fn;
+  else
+    free (fn);
+
   return fd;
 }
 

patchlevel.h

@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 30
+#define PATCHLEVEL 31
 
 #endif /* _PATCHLEVEL_H_ */