Don't show HUD reflection on water surface

For reflectclip > 1 player's HUD reflects on water surface.
It fixes https://github.com/assaultcube/AC/issues/75

source/src/rendergl.cpp

@@ -605,7 +605,7 @@ GLuint reflecttex = 0, refracttex = 0;
 int reflectlastsize = 0;
 
 VARP(reflectsize, 6, 8, 10);
-VAR(reflectclip, 0, 3, 100);
+VAR(reflectclip, 0, 1, 100);
 VARP(waterreflect, 0, 1, 1);
 VARP(waterrefract, 0, 0, 1);
 VAR(reflectscissor, 0, 1, 1);