LazMapViewer: Improved point detection in mvPluginCommon's FindNearestMarker. Issue #39101.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@9716 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/lazmapviewer/source/mvplugincommon.pas

@@ -710,7 +710,7 @@ begin
     P := TGPSPoint(gpsArray[i]).RealPoint;
     // Calculating distance as Euklidian distance, for simplicity. No need to calc sqrt.
     d := sqr(P.Lon - rPt.Lon) + sqr(P.Lat - rPt.Lat);
-    if d < dMin then
+    if d <= dMin then
     begin
       dMin := d;
       iMin := i;