command/{storage,file}: suppress bogus format warnings on WIN32

src/command/FileCommands.cxx

@@ -59,6 +59,13 @@ skip_path(const char *name_fs)
 	return strchr(name_fs, '\n') != nullptr;
 }
 
+#if defined(WIN32) && GCC_CHECK_VERSION(4,6)
+/* PRIu64 causes bogus compiler warning */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat"
+#pragma GCC diagnostic ignored "-Wformat-extra-args"
+#endif
+
 CommandResult
 handle_listfiles_local(Client &client, const char *path_utf8)
 {
@@ -109,6 +116,10 @@ handle_listfiles_local(Client &client, const char *path_utf8)
 	return CommandResult::OK;
 }
 
+#if defined(WIN32) && GCC_CHECK_VERSION(4,6)
+#pragma GCC diagnostic pop
+#endif
+
 gcc_pure
 static bool
 IsValidName(const char *p)

src/command/StorageCommands.cxx

@@ -46,6 +46,13 @@ skip_path(const char *name_utf8)
 	return strchr(name_utf8, '\n') != nullptr;
 }
 
+#if defined(WIN32) && GCC_CHECK_VERSION(4,6)
+/* PRIu64 causes bogus compiler warning */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat"
+#pragma GCC diagnostic ignored "-Wformat-extra-args"
+#endif
+
 static bool
 handle_listfiles_storage(Client &client, StorageDirectoryReader &reader,
 			 Error &error)
@@ -83,6 +90,10 @@ handle_listfiles_storage(Client &client, StorageDirectoryReader &reader,
 	return true;
 }
 
+#if defined(WIN32) && GCC_CHECK_VERSION(4,6)
+#pragma GCC diagnostic pop
+#endif
+
 static bool
 handle_listfiles_storage(Client &client, Storage &storage, const char *uri,
 			 Error &error)