IR: always update deserializedSymbols in referenceLocalIrSymbol

The symbol created in deserializeIrSymbolToDeclare might be discarded
when an existing declaration is used in deserialization (as it happens
when deserializing IR bodies for JVM declarations).

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrDeclarationDeserializer.kt

@@ -286,7 +286,7 @@ class IrDeclarationDeserializer(
 
         // make sure this symbol is known to linker
         symbolDeserializer.referenceLocalIrSymbol(result.symbol, sig)
-        result.annotations += deserializeAnnotations(proto.base.annotationList)
+        result.annotations = deserializeAnnotations(proto.base.annotationList)
         result.parent = currentParent
         return result
     }

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrSymbolDeserializer.kt

@@ -73,7 +73,7 @@ class IrSymbolDeserializer(
     }
 
     fun referenceLocalIrSymbol(symbol: IrSymbol, signature: IdSignature) {
-        deserializedSymbols.putIfAbsent(signature, symbol)
+        deserializedSymbols.put(signature, symbol)
     }
 
     fun referenceSimpleFunctionByLocalSignature(idSignature: IdSignature) : IrSimpleFunctionSymbol =