engine: fix config executing

engine/cmd.cpp

@@ -624,12 +624,13 @@ void Cmd_Exec_f( const CCommand &args )
 		}
 	}
 
-	static char buf[16384] = { 0 };
+	char *buf = new char[16384];
 	int len = 0;
-	char *f = (char *)COM_LoadStackFile( fileName, buf, sizeof( buf ), len );
+	char *f = (char *)COM_LoadStackFile( fileName, buf, 16384, len );
 	if ( !f )
 	{
 		ConMsg( "exec: couldn't exec %s\n", szFile );
+		delete[] buf;
 		return;
 	}
 
@@ -684,6 +685,9 @@ void Cmd_Exec_f( const CCommand &args )
 			free( f );
 		}
 	}
+
+	delete[] buf;
+
 	// force any queued convar changes to flush before reading/writing them
 	UpdateMaterialSystemConfig();
 }