Update Spanish (Latin America) localization.

Readded removed translations in one of the last changes.

QEMUHelper/es-419.lproj/Localizable.strings

@@ -4,3 +4,5 @@
 /* QEMUHelper */
 "Error starting QEMU." = "Error al iniciar QEMU.";
 
+/* QEMUHelper */
+"QEMU exited unexpectedly." = "QEMU se cerró inesperadamente.";