[Test] Reformat MockLibraryUtil according to code style

compiler/tests-common/tests/org/jetbrains/kotlin/test/MockLibraryUtil.kt

@@ -53,8 +53,16 @@ object MockLibraryUtil {
         useJava9: Boolean = false
     ): File {
         return compileLibraryToJar(
-            sourcesPath, KtTestUtil.tmpDirForReusableFolder("testLibrary-" + jarName), jarName, addSources, allowKotlinSources, extraOptions, extraClasspath
+            sourcesPath,
-            , useJava9)}
+            KtTestUtil.tmpDirForReusableFolder("testLibrary-" + jarName),
+            jarName,
+            addSources,
+            allowKotlinSources,
+            extraOptions,
+            extraClasspath,
+            useJava9
+        )
+    }
 
     @JvmStatic
     @JvmOverloads
@@ -103,8 +111,7 @@ object MockLibraryUtil {
             // Probably no kotlin files were present, so dir might not have been created after kotlin compiler
             if (classesDir.exists()) {
                 classpath += classesDir.path
-            }
+            } else {
-            else {
                 FileUtil.createDirectory(classesDir)
             }