crystal: fix build in chroot environment, again

forgot to patch interpreter of the script used by Makefile,
carefully ensure it can build without /usr/bin/env this time.

pkgs/development/compilers/crystal/default.nix

@@ -60,6 +60,9 @@ stdenv.mkDerivation rec {
     # patch the script which launches the prebuilt compiler
     substituteInPlace $(pwd)/crystal-${version}-1/bin/crystal --replace \
       "/usr/bin/env bash" "${stdenv.shell}"
+    substituteInPlace $(pwd)/crystal-${version}/bin/crystal --replace \
+      "/usr/bin/env bash" "${stdenv.shell}"
+
     ${fixPrebuiltBinary}
 
     cd crystal-${version}