Make default value for -Xjsr305 flag to be WARN

core/util.runtime/src/org/jetbrains/kotlin/utils/Jsr305State.kt

@@ -26,11 +26,11 @@ enum class Jsr305State(
 
     companion object {
         @JvmField
-        val DEFAULT: Jsr305State = IGNORE
+        val DEFAULT: Jsr305State = WARN
 
         fun findByDescription(description: String?) = values().firstOrNull { it.description == description }
     }
 
     fun isIgnored(): Boolean = this == IGNORE
     fun isWarning(): Boolean = this == WARN
-}
+}