Minor, init slice debug names for FilesByFacadeFqNameIndexer

compiler/frontend.java/src/org/jetbrains/kotlin/load/java/components/FilesByFacadeFqNameIndexer.kt

@@ -8,9 +8,11 @@ package org.jetbrains.kotlin.load.java.components
 import org.jetbrains.kotlin.fileClasses.javaFileFacadeFqName
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.BindingTrace
 import org.jetbrains.kotlin.resolve.FilePreprocessorExtension
 import org.jetbrains.kotlin.resolve.addElementToSlice
+import org.jetbrains.kotlin.util.slicedMap.BasicWritableSlice
 import org.jetbrains.kotlin.util.slicedMap.Slices
 import org.jetbrains.kotlin.util.slicedMap.WritableSlice
 
@@ -24,7 +26,14 @@ class FilesByFacadeFqNameIndexer(private val trace: BindingTrace) : FilePreproce
     }
 
     companion object {
+        @JvmField
         val FACADE_FILES_BY_FQ_NAME: WritableSlice<FqName, MutableCollection<KtFile>> = Slices.createSimpleSlice()
+
+        @JvmField
         val FACADE_FILES_BY_PACKAGE_NAME: WritableSlice<FqName, MutableCollection<KtFile>> = Slices.createSimpleSlice()
+
+        init {
+            BasicWritableSlice.initSliceDebugNames(FilesByFacadeFqNameIndexer::class.java)
+        }
     }
-}
+}