Fix indentation

Author: ebassi

meson.build

@@ -165,7 +165,7 @@ endif
 dl_dep = cc.find_library('dl', required: false)
 gl_dep = dependency('gl', required: false)
 if not gl_dep.found() and not build_glx
-	gl_dep = dependency('opengl', required: false)
+  gl_dep = dependency('opengl', required: false)
 endif
 egl_dep = dependency('egl', required: false)