gnu: cloc: Update source hash.

The upstream tarball was modified in place. The only changes are:

  --- /gnu/store/5v39h6zjs33hj5dm2yggz5qk0mva00bs-cloc-1.78.tar.gz
  +++ /gnu/store/pm5ghks76vv6awv3969yvi7qxqfnfs1l-cloc-1.78.tar.gz
  ├── filetype from file(1)
  │ @@ -1 +1 @@
  │ -gzip compressed data, last modified: Fri Sep  7 18:22:49 2018, from Unix
  │ +gzip compressed data, last modified: Sat Sep  8 14:09:43 2018, from Unix
  │   --- 5v39h6zjs33hj5dm2yggz5qk0mva00bs-cloc-1.78.tar
  ├── +++ pm5ghks76vv6awv3969yvi7qxqfnfs1l-cloc-1.78.tar
  │ ├── file list
  │ │ @@ -1,13 +1,13 @@
  │ │  -rwxrwxr-x 0 al (1000) al (1000) 545021 2018-09-07 18:21:22 cloc-1.78/cloc
  │ │  -rwxrwxr-x 0 al (1000) al (1000)   1818 2018-09-07 18:21:22 cloc-1.78/sqlite_formatter
  │ │ -drwxrwxr-x 0 al (1000) al (1000)      0 2018-09-07 18:21:22 cloc-1.78/Unix/
  │ │ --rwxrwxr-x 0 al (1000) al (1000) 498571 2018-09-07 18:21:22 cloc-1.78/Unix/cloc
  │ │ +drwxrwxr-x 0 al (1000) al (1000)      0 2018-09-08 14:09:23 cloc-1.78/Unix/
  │ │ +-rwxrwxr-x 0 al (1000) al (1000) 498537 2018-09-08 14:09:22 cloc-1.78/Unix/cloc
  │ │  -rwxrwxr-x 0 al (1000) al (1000)  32382 2018-09-07 18:21:22 cloc-1.78/Unix/t/00_C.t
  │ │  -rwxrwxr-x 0 al (1000) al (1000)  12614 2018-09-07 18:21:22 cloc-1.78/Unix/t/01_opts.t
  │ │  -rw-rw-r-- 0 al (1000) al (1000)    862 2018-09-07 18:21:22 cloc-1.78/Unix/README
  │ ├── cloc-1.78/Unix/cloc
  │ │ @@ -1,8 +1,7 @@
  │ │ -#!/usr/local/perl/5.28.0/bin/perl
  │ │  #!/usr/bin/env perl

* gnu/packages/code.scm (cloc)[source]: Update sha256 hash.

gnu/packages/code.scm

@@ -220,7 +220,7 @@ COCOMO model or user-provided parameters.")
              "/cloc-" version ".tar.gz"))
        (sha256
         (base32
-         "176xklr2qsgxh9zdb565gib6pp4gsm585rz5fvyphgjy4i679wkv"))))
+         "1j9lwy9xf43kpv1csqdxzch6y1hnsv881ddqd357f8v58dhr4s68"))))
     (build-system gnu-build-system)
     (inputs
      `(("coreutils" ,coreutils)