EnsureSingleSpaceAfterTokenChecker doesn't work. Use regexp instead.

Author: DarkDimius

scalastyle-config.xml

@@ -78,9 +78,9 @@
  <check level="warning" class="org.scalastyle.scalariform.NoFinalizeChecker" enabled="true"></check>
  <check level="warning" class="org.scalastyle.scalariform.CovariantEqualsChecker" enabled="true"></check>
  <check level="warning" class="org.scalastyle.scalariform.StructuralTypeChecker" enabled="false"></check>
- <check level="warning" class="org.scalastyle.file.RegexChecker" enabled="false">
+ <check level="warning" class="org.scalastyle.file.RegexChecker" enabled="true">
   <parameters>
-   <parameter name="regex"><![CDATA[println]]></parameter>
+   <parameter name="regex"><![CDATA[if\(]]></parameter>
   </parameters>
  </check>
  <check level="warning" class="org.scalastyle.scalariform.NumberOfTypesChecker" enabled="false">