Allow semicolon before block in c-style for loop

Fixes #33

grammar.js

@@ -100,6 +100,7 @@ module.exports = grammar({
       $._terminator,
       optional($._expression),
       '))',
+      optional(';'),
       choice(
         $.do_group,
         $.compound_statement

script/known-failures.txt

@@ -2,26 +2,21 @@ examples/bash-it/plugins/available/git.plugin.bash
 examples/bash-it/plugins/available/extract.plugin.bash
 examples/bash-it/plugins/available/go.plugin.bash
 examples/bash-it/install.sh
-examples/bash-it/completion/available/go.completion.bash
 examples/bash-it/completion/available/svn.completion.bash
 examples/bash-it/completion/available/docker-compose.completion.bash
 examples/bash-it/completion/available/jboss7.completion.bash
 examples/bash-it/completion/available/gh.completion.bash
-examples/bash-it/completion/available/bundler.completion.bash
 examples/bash-it/completion/available/drush.completion.bash
 examples/bash-it/completion/available/hub.completion.bash
 examples/bash-it/completion/available/docker-machine.completion.bash
 examples/bash-it/completion/available/git.completion.bash
-examples/bash-it/completion/available/vagrant.completion.bash
 examples/bash-it/completion/available/defaults.completion.bash
 examples/bash-it/completion/available/packer.completion.bash
 examples/bash-it/completion/available/vault.completion.bash
 examples/bash-it/completion/available/docker.completion.bash
 examples/bash-it/completion/available/tmux.completion.bash
-examples/bash-it/completion/available/apm.completion.bash
 examples/bash-it/lib/preexec.bash
 examples/bash-it/lib/composure.bash
-examples/bash-it/test_lib/bats-support/src/lang.bash
 examples/bash-it/test_lib/bats-support/src/output.bash
 examples/bash-it/test_lib/bats-assert/src/assert.bash
 examples/bash-it/themes/hawaii50/hawaii50.theme.bash

src/grammar.json

@@ -224,6 +224,18 @@
           "type": "STRING",
           "value": "))"
         },
+        {
+          "type": "CHOICE",
+          "members": [
+            {
+              "type": "STRING",
+              "value": ";"
+            },
+            {
+              "type": "BLANK"
+            }
+          ]
+        },
         {
           "type": "CHOICE",
           "members": [