Fix exception during step into inline function in library

idea/testData/debugger/tinyApp/outs/stepIntoStdlibInlineFun2step.out

@@ -0,0 +1,9 @@
+LineBreakpoint created at functionInLibrary.kt:3
+!JDK_HOME!\bin\java -agentlib:jdwp=transport=dt_socket,address=!HOST_NAME!:!HOST_PORT!,suspend=y,server=n -Dfile.encoding=!FILE_ENCODING! -classpath !APP_PATH!\classes;!KOTLIN_RUNTIME!;!CUSTOM_LIBRARY!;!RT_JAR! stepIntoStdlibInlineFun2step.StepIntoStdlibInlineFun2stepPackage
+Connected to the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
+stepIntoStdlibInlineFun2step.kt:4
+functionInLibrary.kt:4
+functionInLibrary.kt:8
+Disconnected from the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
+
+Process finished with exit code 0

idea/testData/debugger/tinyApp/src/stepping/custom/stepIntoStdlibInlineFun2step.kt

@@ -0,0 +1,8 @@
+package stepIntoStdlibInlineFun2step
+
+fun main(args: Array<String>) {
+    customLib.functionInLibrary.simpleFun()
+}
+
+// ADDITIONAL_BREAKPOINT: functionInLibrary.kt:public inline fun simpleFun()
+// STEP_INTO: 2