Cull extraneous whitespace.

One last flurry with the broom before I leave you slobs to code
in your own filth. Eliminated all the trailing whitespace I
could manage, with special prejudice reserved for the test cases
which depended on the preservation of trailing whitespace.

Was reminded I cannot figure out how to eliminate the trailing
space on the "scala> " prompt in repl transcripts. At least
reduced the number of such empty prompts by trimming transcript
code on the way in.

Routed ConsoleReporter's "printMessage" through a trailing
whitespace stripping method which might help futureproof
against the future of whitespace diseases. Deleted the up-to-40
lines of trailing whitespace found in various library files.

It seems like only yesterday we performed whitespace surgery
on the whole repo. Clearly it doesn't stick very well. I suggest
it would work better to enforce a few requirements on the way in.

1 files changed, 7 insertions, 7 deletions

diff --git a/test/files/run/t7181.scala b/test/files/run/t7181.scala
index a055e43481..489ec313f6 100644
--- a/test/files/run/t7181.scala
+++ b/test/files/run/t7181.scala
@@ -21,7 +21,7 @@ object Test extends App {
     val result = try
       driver(action)
     catch {
-      case UncaughtException(a) => 
+      case UncaughtException(a) =>
         gotException = true
         a
     }
@@ -35,13 +35,13 @@ object Test extends App {
   def driver(action: Action): Action = {
     val result = try {
       action match {
-        case MainNormalExit => 
+        case MainNormalExit =>
           println(s"normal exit $action")
           action
         case MainReturn =>
           println(s"return $action")
           return action
-        case MainUncaughtException => 
+        case MainUncaughtException =>
           println(s"uncaught exception $action")
           throw UncaughtException(action)
         case _ =>
@@ -50,16 +50,16 @@ object Test extends App {
       }
     } catch {
       case CaughtException(action) => action match {
-        case ExceptionNormalExit => 
+        case ExceptionNormalExit =>
           println(s"normal exit $action")
           action
-        case ExceptionReturn => 
+        case ExceptionReturn =>
           println(s"return $action")
           return action
-        case ExceptionUncaughtException => 
+        case ExceptionUncaughtException =>
           println(s"uncaught exception $action")
           throw UncaughtException(action)
-        case _ => 
+        case _ =>
           sys.error(s"unexpected $action in exception handler")
       }
     } finally {