lib/fetch: ignore -Wformat-nonliteral with clang.

lib/fetch/common.c

@@ -69,6 +69,10 @@
 #include "fetch.h"
 #include "common.h"
 
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wformat-nonliteral"
+#endif
+
 /*** Local data **************************************************************/
 
 /*

lib/fetch/ftp.c

@@ -93,6 +93,10 @@
 #include "common.h"
 #include "ftperr.h"
 
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wformat-nonliteral"
+#endif
+
 #define FTP_ANONYMOUS_USER	"anonymous"
 
 #define FTP_CONNECTION_ALREADY_OPEN	125

lib/fetch/http.c

@@ -102,6 +102,10 @@
 #include "common.h"
 #include "httperr.h"
 
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wformat-nonliteral"
+#endif
+
 /* Maximum number of redirects to follow */
 #define MAX_REDIRECT 5