Exclude .kt files from empty block query

Author: tamasvajk

java/ql/src/Likely Bugs/Statements/EmptyBlock.ql

@@ -56,6 +56,7 @@ predicate blockParent(Stmt empty, string msg) {
 
 from Stmt empty, string msg
 where
+  empty.getFile().isJavaSourceFile() and
   empty = emptyBody() and
   blockParent(empty, msg)
 select empty, msg + " Typographical error or missing code?"

java/ql/test/kotlin/query-tests/EmptyBlock/EmptyBlock.expected

@@ -1,3 +0,0 @@
-| Test.kt:1:1:13:1 | { ... } | This block should not be empty. Typographical error or missing code? |
-| Test.kt:2:20:4:5 | { ... } | This block should not be empty. Typographical error or missing code? |
-| Test.kt:7:9:8:9 | { ... } | This block should not be empty. Typographical error or missing code? |