Fix IndexNotReadyException during runnning scratch file in Android Studio

idea/idea-jvm/src/org/jetbrains/kotlin/idea/scratch/compile/KtCompilingExecutor.kt

@@ -23,7 +23,9 @@ import com.intellij.openapi.compiler.ex.CompilerPathsEx
 import com.intellij.openapi.module.Module
 import com.intellij.openapi.progress.ProgressIndicator
 import com.intellij.openapi.progress.Task
+import com.intellij.openapi.project.DumbService
 import com.intellij.openapi.roots.OrderEnumerator
+import com.intellij.openapi.util.Computable
 import com.intellij.openapi.util.io.FileUtil
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.codegen.ClassBuilderFactories
@@ -77,7 +79,11 @@ class KtCompilingExecutor(file: ScratchFile) : ScratchExecutor(file) {
                         }
 
                         try {
-                            val tempDir = runReadAction { compileFileToTempDir(modifiedScratchSourceFile) } ?: return
+                            val tempDir = DumbService.getInstance(project).runReadActionInSmartMode(
+                                Computable {
+                                    compileFileToTempDir(modifiedScratchSourceFile)
+                                }
+                            ) ?: return
 
                             try {
                                 val commandLine = createCommandLine(module, result.mainClassName, tempDir.path)