input/Plugin: add noexcept

src/input/InputPlugin.hxx

@@ -56,7 +56,7 @@ struct InputPlugin {
 	 * Global deinitialization.  Called once before MPD shuts
 	 * down (only if init() has returned true).
 	 */
-	void (*finish)();
+	void (*finish)() noexcept;
 
 	/**
 	 * Attempt to open the given URI.  Returns nullptr if the
@@ -69,7 +69,7 @@ struct InputPlugin {
 	/**
 	 * return a set of supported protocols
 	 */
-	std::set<std::string> (*protocols)();
+	std::set<std::string> (*protocols)() noexcept;
 
 	/**
 	 * Prepare a #RemoteTagScanner.  The operation must be started
@@ -103,7 +103,8 @@ struct InputPlugin {
 	}
 };
 
+gcc_pure
 bool
-protocol_is_whitelisted(const char *proto);
+protocol_is_whitelisted(const char *proto) noexcept;
 
 #endif