From c49168d8156deb366304d90bfd62012e558dc6dd Mon Sep 17 00:00:00 2001
From: Norman Princen <63923352+NPrincen@users.noreply.github.com>
Date: Fri, 1 May 2020 04:59:43 -0700
Subject: [PATCH] Improved accuracy of HandleGetT terrain probe and requested
 changes

---
 xpcPlugin/MessageHandlers.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xpcPlugin/MessageHandlers.cpp b/xpcPlugin/MessageHandlers.cpp
index c8de4fd..43e90af 100644
--- a/xpcPlugin/MessageHandlers.cpp
+++ b/xpcPlugin/MessageHandlers.cpp
@@ -685,6 +685,7 @@ namespace XPC
 		{
 			Log::FormatLine(LOG_ERROR, "TERR", "Probe failed. Return Value %u", rc);
 			XPLMDestroyProbe(Terrain_probe);
+			Terrain_probe = nullptr;
 			return;
 		}
 		
@@ -694,7 +695,7 @@ namespace XPC
 		Log::FormatLine(LOG_TRACE, "TERR", "Conv LLA=%f, %f, %f", lat, lon, alt);
 
 		// transform probe location to local coordinates
-		// Step 4. NOW convert your origina lat/lon with the elevation from step 3 to XYZ
+		// Step 4. NOW convert your original lat/lon with the elevation from step 3 to XYZ
 		XPLMWorldToLocal(pos[0], pos[1], alt, &X, &Y, &Z);
 
 		// query probe