Fix issue with line spacing in Code Grid report on Windows, due

to the .split method being translated by StringLike.split into
a regex [\r\n] which will cause 2 lines in the resultant array.
Issue is resolved if treating as a single String, which will
invoke the Java String.split(String regex) method, and correctly
treat the "\r\n" as a single expression. This should work correctly
on other platforms with a single character line ending (Unix and Mac).

Author: pmularien

scalac-scoverage-plugin/src/main/scala/scoverage/report/CodeGrid.scala

@@ -9,7 +9,7 @@ class CodeGrid(mfile: MeasuredFile) {
 
   case class Cell(char: Char, var status: StatementStatus)
 
-  private val lineBreak = System.getProperty("line.separator").toCharArray
+  private val lineBreak = System.getProperty("line.separator")
 
   // note: we must reinclude the line sep to keep source positions correct.
   private val lines = source(mfile).split(lineBreak).map(line => (line.toCharArray ++ lineBreak).map(Cell(_, NoData)))