Merge pull request #2553 from signalwire/maria

[mod_mariadb] Coverity 1546237 COPY_INSTEAD_OF_MOVE

Author: andywolk

src/mod/databases/mod_mariadb/mariadb_dsn.cpp

@@ -81,7 +81,7 @@ class mariadb_dsn {
 					std::string value = pair[1];
 
 					if ("server" == key || "host" == key) {
-						_host = value;
+						_host = std::move(value);
 					} else if ("uid" == key || "user" == key || "username" == key) {
 						_user = std::move(value);
 					} else if ("pwd" == key || "passwd" == key || "password" == key) {