printer: fix path handling in summarizer

This commit fixes a bug where both of the following commands always
reported an error:

    rg --files-with-matches foo file
    rg --files-without-match foo file

In particular, the printer was erroneously respecting the `path` option
even the the summary kind was `PathWithMatch` or `PathWithoutMatch`. The
documented behavior is that those summary kinds always require a path,
and thus, the `path` option has no effect. We fix this by correcting the
case analysis.

This also fixes a bug where the exit code for `--files-without-match`
was not set correctly. We update the printer's `has_match` method to
report the correct value.

Fixes #1106, Closes #1130

CHANGELOG.md

@@ -9,6 +9,11 @@ Feature enhancements:
 * [FEATURE #1170](https://github.com/BurntSushi/ripgrep/pull/1170):
   Add `--ignore-file-case-insensitive` for case insensitive .ignore globs.
 
+Bug fixes:
+
+* [BUG #1106](https://github.com/BurntSushi/ripgrep/issues/1106):
+  `--files-with-matches` and `--files-without-match` work with one file.
+
 
 0.10.0 (2018-09-07)
 ===================