*: add lots of "noexcept" specifications

src/net/StaticSocketAddress.cxx

@@ -53,7 +53,7 @@ StaticSocketAddress::operator=(SocketAddress other) noexcept
 #ifdef HAVE_TCP
 
 bool
-StaticSocketAddress::SetPort(unsigned port)
+StaticSocketAddress::SetPort(unsigned port) noexcept
 {
 	switch (GetFamily()) {
 	case AF_INET:

src/net/StaticSocketAddress.hxx

@@ -96,7 +96,7 @@ public:
 	 * Extract the port number.  Returns 0 if not applicable.
 	 */
 	gcc_pure
-	unsigned GetPort() const {
+	unsigned GetPort() const noexcept {
 		return ((SocketAddress)*this).GetPort();
 	}
 
@@ -104,7 +104,7 @@ public:
 	 * @return true on success, false if this address cannot have
 	 * a port number
 	 */
-	bool SetPort(unsigned port);
+	bool SetPort(unsigned port) noexcept;
 #endif
 
 	gcc_pure