Put a quick bandaid on internal citrus locking.

The code is not quite right still, but it programs from deadlocking
on themselves if one enables new citrus code by mistake.

lib/libc/iconv/citrus_mapper.c

@@ -337,7 +337,9 @@ _citrus_mapper_open(struct _citrus_mapper_area *__restrict ma,
 		goto quit;
 
 	/* open mapper */
+	UNLOCK;
 	ret = mapper_open(ma, &cm, module, variable);
+	WLOCK;
 	if (ret)
 		goto quit;
 	cm->cm_key = strdup(mapname);

lib/libc/iconv/iconv.c

@@ -85,7 +85,7 @@ _iconv_open(const char *out, const char *in, struct _citrus_iconv *prealloc)
 		errno = ENOMEM;
 		return ((iconv_t)-1);
 	}
-		
+
 	p = out_truncated;
         while (*p != 0) {
                 if (p[0] == '/' && p[1] == '/') {