Fix accessing nullable location() method

idea/src/org/jetbrains/kotlin/idea/debugger/breakpoints/KotlinFieldBreakpoint.kt

@@ -253,7 +253,7 @@ class KotlinFieldBreakpoint(
     }
 
     fun matchesEvent(event: LocatableEvent): Boolean {
-        val method = event.location().method()
+        val method = event.location()?.method()
         // TODO check property type
         return method != null && method.name() in getMethodsName()
     }
@@ -264,7 +264,7 @@ class KotlinFieldBreakpoint(
     }
 
     override fun getEventMessage(event: LocatableEvent): String {
-        val location = event.location()
+        val location = event.location()!!
         val locationQName = location.declaringType().name() + "." + location.method().name()
         val locationFileName = try {
             location.sourceName()

idea/src/org/jetbrains/kotlin/idea/debugger/debuggerUtil.kt

@@ -169,7 +169,7 @@ fun suspendFunctionFirstLineLocation(location: Location): Int? {
         return null
     }
 
-    val lineNumber = location.method().location().lineNumber()
+    val lineNumber = location.method().location()?.lineNumber()
     if (lineNumber == -1) {
         return null
     }

idea/src/org/jetbrains/kotlin/idea/debugger/filter/KotlinSyntheticTypeComponentProvider.kt

@@ -39,7 +39,7 @@ class KotlinSyntheticTypeComponentProvider: SyntheticTypeComponentProvider {
         try {
             if (typeComponent.isDelegateToDefaultInterfaceImpl()) return true
 
-            if (typeComponent.location().lineNumber() != 1) return false
+            if (typeComponent.location()?.lineNumber() != 1) return false
 
             if (typeComponent.allLineLocations().any { it.lineNumber() != 1 }) {
                 return false