Confirm fn_19636 (CNavigationManager::RouteToSavedTarget)

Batch #17159 by eAthena: 0 byte-identical, 1 confirmed by peer review.

- fn_19636 CNavigationManager::RouteToSavedTarget: logic confirmed by peer review (already on main)

Peer-reviewed-by: ragnarok-clanker, Yommy, Toshiro
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).

Source/Contents/Navigation/NavigationRoute.cpp

@@ -38,6 +38,9 @@
 
 #include "Resource/MSGSTRINGID.h"
 #include "Network/Packets/PacketId.h"
+
+extern template std::string& std::string::operator=(std::string&&) noexcept;
+
 namespace {
   // GLOBAL: gl_25136
   int g_locationFrame = 1;