Don't increase OOCB count when a REPL line is modified

idea/idea-repl/src/org/jetbrains/kotlin/console/KotlinConsoleRunner.kt

@@ -56,6 +56,7 @@ import org.jetbrains.kotlin.console.gutter.ReplIcons
 import org.jetbrains.kotlin.idea.KotlinLanguage
 import org.jetbrains.kotlin.idea.caches.resolve.ModuleTestSourceInfo
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptor
+import org.jetbrains.kotlin.idea.project.KOTLIN_CONSOLE_KEY
 import org.jetbrains.kotlin.idea.util.application.runReadAction
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.parsing.KotlinParserDefinition
@@ -136,6 +137,7 @@ class KotlinConsoleRunner(
         val builder = LanguageConsoleBuilder()
 
         val consoleView = builder.gutterContentProvider(ConsoleGutterContentProvider()).build(project, KotlinLanguage.INSTANCE)
+        consoleView.virtualFile.putUserData(KOTLIN_CONSOLE_KEY, true)
 
 
         consoleView.prompt = null
@@ -260,6 +262,7 @@ class KotlinConsoleRunner(
             val virtualFile =
                     LightVirtualFile("line$lineNumber${KotlinParserDefinition.STD_SCRIPT_EXT}", KotlinLanguage.INSTANCE, text).apply {
                         charset = CharsetToolkit.UTF8_CHARSET
+                        isWritable = false
                     }
             val psiFile = (PsiFileFactory.getInstance(project) as PsiFileFactoryImpl).trySetupPsiForFile(virtualFile, KotlinLanguage.INSTANCE, true, false) as KtFile?
                           ?: error("Failed to setup PSI for file:\n$text")