Core/Entities: Fixed GameObject::FindNearestX for objects with the same coordinates.

closes #4581

src/server/game/Entities/GameObject/GameObject.cpp

@@ -1707,6 +1707,11 @@ bool GameObject::IsInRange(float x, float y, float z, float radius) const
     float dy = y - GetPositionY();
     float dz = z - GetPositionZ();
     float dist = sqrt(dx*dx + dy*dy);
+    //! Check if the distance between the 2 objects is 0, can happen if both objects are on the same position.
+    //! The code below this check wont crash if dist is 0 because 0/0 in float operations is valid, and returns infinite
+    if (G3D::fuzzyEq(dist, 0.0f))
+        return true;
+
     float sinB = dx / dist;
     float cosB = dy / dist;
     dx = dist * (cosA * cosB + sinA * sinB);