translator: small cleanup

translator/src/main/kotlin/org/kotlinnative/translator/BlockCodegen.kt

@@ -353,12 +353,9 @@ abstract class BlockCodegen(val state: TranslationState, val variableManager: Va
     private fun evaluateNameReferenceExpression(expr: KtNameReferenceExpression, classScope: StructCodegen): LLVMSingleValue? {
         val fieldName = state.bindingContext.get(BindingContext.REFERENCE_TARGET, expr)!!.name.toString()
         val companionObject = (classScope as ClassCodegen).companionObjectCodegen ?: throw UnexpectedException(expr.text)
-        val field = companionObject.fieldsIndex[fieldName]
+        val field = companionObject.fieldsIndex[fieldName] ?: throw UnexpectedException(expr.text)
         val receiver = variableManager[companionObject.fullName]!!
-        if (field == null) {
-            throw UnexpectedException("")
-        }
-        val result = codeBuilder.getNewVariable(field!!.type, pointer = 1)
+        val result = codeBuilder.getNewVariable(field.type, pointer = 1)
 
         codeBuilder.loadClassField(result, receiver, field.offset)
         return result

translator/src/main/kotlin/org/kotlinnative/translator/llvm/types/LLVMStringType.kt

@@ -17,4 +17,7 @@ class LLVMStringType(override val length: Int) : LLVMArray, LLVMType() {
     override fun basicType() = LLVMCharType()
     override val typename = "i8*"
     override fun fullType() = "[${length + 1} x i8]"
+    override fun hashCode(): Int {
+        return length
+    }
 }