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/NavigationLink.cpp

@@ -54,3 +54,24 @@ CNaviInfo* CNavi_Link::GetInfo() const {
   }
   return this->info;
 }
+
+// OFFSET: 0x00B8DB20
+std::vector<NaviLink>::iterator CNavi_Link::LinkedBegin() {
+  return this->linkedLinks.begin();
+}
+
+// OFFSET: 0x00B8DE60
+std::vector<NaviLink>::iterator CNavi_Link::LinkedEnd() {
+  return this->linkedLinks.end();
+}
+
+// OFFSET: 0x00B8E860
+// FUNCTION: fn_19489
+CNaviInfo* CNavi_Link::GetLinkedInfo() const {
+  return this->linkedInfo;
+}
+
+// OFFSET: 0x00B90400
+void CNavi_Link::SetDepth(int depth) {
+  this->depth = depth;
+}