Fix compiler warnings in compiler code

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/JvmResolverForModuleFactory.kt

@@ -83,7 +83,7 @@ class JvmResolverForModuleFactory(
             }
 
             val resolverForModule = resolverForReferencedModule?.takeIf {
-                referencedClassModule.platform.isJvm() || referencedClassModule.platform == null
+                referencedClassModule.platform.isJvm()
             } ?: run {
                 // in case referenced class lies outside of our resolver, resolve the class as if it is inside our module
                 // this leads to java class being resolved several times
@@ -95,7 +95,7 @@ class JvmResolverForModuleFactory(
         val trace = CodeAnalyzerInitializer.getInstance(project).createTrace()
 
         val lookupTracker = LookupTracker.DO_NOTHING
-        val packagePartProvider = (platformParameters as JvmPlatformParameters).packagePartProviderFactory(moduleContent)
+        val packagePartProvider = platformParameters.packagePartProviderFactory(moduleContent)
         val container = createContainerForLazyResolveWithJava(
             moduleDescriptor.platform!!,
             moduleContext,

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/KotlinJavaPsiFacade.java

@@ -86,6 +86,7 @@ public class KotlinJavaPsiFacade {
             private long lastTimeSeen = -1L;
 
             @Override
+            @SuppressWarnings("deprecation")
             public void modificationCountChanged() {
                 long now = modificationTracker.getJavaStructureModificationCount();
                 if (lastTimeSeen != now) {