Fix printing catch clause

Author: nicolasstucki

library/src/scala/tasty/util/ShowSourceCode.scala

@@ -383,8 +383,12 @@ class ShowSourceCode[T <: Tasty with Singleton](tasty0: T) extends Show[T](tasty
         this += "try "
         printTree(body)
         if (cases.nonEmpty) {
-          this += " catch "
-          printCases(cases, lineBreak())
+          this += " catch {"
+          indented {
+            this += lineBreak()
+            printCases(cases, lineBreak())
+          }
+          this += lineBreak() += "}"
         }
         finallyOpt match {
           case Some(t) =>

tests/run/t6370.decompiled

@@ -0,0 +1,15 @@
+/** Decompiled from out/runTestFromTasty/run/t6370/Test.class */
+object Test {
+  def main(args: scala.Array[scala.Predef.String]): scala.Unit = {
+    val m: collection.immutable.ListMap[java.lang.String, scala.Int] = scala.collection.immutable.ListMap.apply[java.lang.String, scala.Int](scala.Predef.ArrowAssoc[java.lang.String]("x").->[scala.Int](1))
+    try {
+      {
+        m.apply("y")
+        ()
+      }
+    } catch {
+      case e: scala.NoSuchElementException =>
+        dotty.DottyPredef.assert(e.getMessage().==("key not found: y"))
+    }
+  }
+}