Prevent infinite recursion in exit_cleanup(). Patch from Sviatoslav Sviridov.

NEWS

@@ -55,6 +55,9 @@ rsync changes since last release
     * Fixed bug in --copy-unsafe-links that caused it to be completely
       broken.  (Dave Dykstra)
 
+    * Prevent infinite recursion in cleanup code under certain circumstances.
+      (Sviatoslav Sviridov)
+
   INTERNAL:
 
     * Many code cleanups and improved internal documentation.  (Martin 

cleanup.c

@@ -61,6 +61,13 @@ void _exit_cleanup(int code, const char *file, int line)
 	int ocode = code;
 	extern int keep_partial;
 	extern int log_got_error;
+	static int inside_cleanup = 0;
+
+	if (inside_cleanup != 0) {
+		/* prevent the occasional infinite recursion */
+		return;
+	}
+	inside_cleanup = 1;
 
 	signal(SIGUSR1, SIG_IGN);
 	signal(SIGUSR2, SIG_IGN);