Show actual IO_ERROR message at VRML import.

https://gitlab.com/kicad/code/kicad/-/issues/17727


(cherry picked from commit 97b15a1708)

plugins/3d/vrml/vrml.cpp

@@ -232,9 +232,11 @@ SCENEGRAPH* LoadVRML( const wxString& aFileName, bool useInline )
         // longer lines then perhaps it shouldn't be used
         modelFile = new FILE_LINE_READER( filename, 0, 8388608 );
     }
-    catch( IO_ERROR & )
+    catch( IO_ERROR& e )
     {
-        wxLogError( wxS( " * " ) + _( "[INFO] load failed: input line too long\n" ) );
+        wxLogError( wxString( wxS( " * " ) )
+                    << wxString::Format( _( "[INFO] load failed: %s" ), e.What() ) );
+
         return nullptr;
     }