Fix for languages with no single line comments panicing

Cargo.lock

@@ -1,6 +1,6 @@
 [root]
 name = "tokei"
-version = "4.5.0"
+version = "4.5.2"
 dependencies = [
  "clap 2.10.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",

Cargo.toml

@@ -8,7 +8,7 @@ license = "MIT/Apache-2.0"
 name = "tokei"
 readme = "README.md"
 repository = "https://github.com/Aaronepower/tokei.git"
-version = "4.5.1"
+version = "4.5.2"
 [build-dependencies]
 serde = "~0.8.0"
 serde_json = "~0.8.0"

cli.yml

@@ -5,7 +5,7 @@ about: Count Code, Quickly.
 author: Aaron P. <theaaronepower@gmail.com>
 bin_name: Tokei
 name: Tokei
-version: 4.5.1
+version: 4.5.2
 args:
     - exclude:
         help: Ignore all files & directories containing the word.

src/language/languages.rs

@@ -105,7 +105,7 @@ fn count_files(mut language_tuple: (&LanguageType, &mut Language)) {
                     &mut stack,
                     &mut quote
                 );
-            } else {
+            } else if language.line_comment.len() != 0 {
                 let mut skip: u8 = 0;
                 let window_size = language.line_comment.iter()
                     .map(|a| a.len())