vips: add package config path for cfitsio

Author: daeho-ro

Formula/v/vips.rb

@@ -57,6 +57,7 @@ class Vips < Formula
   def install
     # mozjpeg needs to appear before libjpeg, otherwise it's not used
     ENV.prepend_path "PKG_CONFIG_PATH", Formula["mozjpeg"].opt_lib/"pkgconfig"
+    ENV.prepend_path "PKG_CONFIG_PATH", Formula["cfitsio"].opt_lib/"pkgconfig"
 
     system "meson", "setup", "build", *std_meson_args
     system "meson", "compile", "-C", "build", "--verbose"