remove semicolons from the end of GLSL functions; fixes macOS

Author: treellama

Source_Files/RenderMain/Shaders/wall.frag

@@ -43,6 +43,6 @@ void main (void) {
 	vec4 color = texture2D(texture0, texCoords.xy);
 	float fogFactor = getFogFactor(length(viewDir));
 	gl_FragColor = vec4(mix(gl_Fog.color.rgb, color.rgb * intensity, fogFactor), vertexColor.a * color.a);
-};
+}
 
 )"

Source_Files/RenderMain/Shaders/wall.vert

@@ -25,6 +25,6 @@ void main(void) {
 	viewXY = -(gl_TextureMatrix[0] * vec4(viewDir.xyz, 1.0)).xyz;
 	viewDir = -viewDir;
 	vertexColor = gl_Color;
-};
+}
 
 )"