Decompile 4 functions in Source/Client/Mode/CGameMode.h, Source/Contents/Ground/TerrainCoordinates.cpp, ...

Batch #1556 by ragnarok-clanker: 2 byte-identical, 2 confirmed by peer review.

- fn_19489 CNavi_Link::GetLinkedInfo: byte-identical
- fn_19481 CNaviInfo::IsVisited: byte-identical
- fn_45449 CNaviData::Clear: logic confirmed by peer review
- fn_19371 CNaviData::~CNaviData: logic confirmed by peer review

Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
Adds to the build: Source/Contents/NavigationDestinations.cpp, Source/Contents/NavigationGraph.cpp, Source/Contents/WorldNavigation.cpp

Source/Contents/NavigationRequest.cpp

@@ -91,3 +91,26 @@ bool CNavigationManager::UpdateGround() {
   this->pathFinder.attr = mode->scene->terrain;
   return true;
 }
+
+// OFFSET: 0x00B8E350
+std::vector<CNavi_Link*>::iterator CNaviInfo::LinksBegin() {
+  return this->links.begin();
+}
+
+// OFFSET: 0x00B8E360
+std::vector<CNavi_Link*>::iterator CNaviInfo::LinksEnd() {
+  return this->links.end();
+}
+
+// OFFSET: 0x00B8E760
+// FUNCTION: fn_19481
+bool CNaviInfo::IsVisited() const {
+  return this->visited;
+}
+
+// OFFSET: 0x00B90410
+void CNaviInfo::SetVisited(bool visited) {
+  if (this->type == 5001) {
+    this->visited = visited;
+  }
+}