Fix warnings in stdlib/compiler/plugins/test code

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/BodyGenerator.kt

@@ -139,7 +139,7 @@ class BodyGenerator(val context: WasmFunctionCodegenContext) : IrElementVisitorV
 
         val wasmGcType: WasmSymbol<WasmTypeDeclaration> = context.referenceGcType(klass.symbol)
 
-        klass.getWasmArrayAnnotation()?.let { wasmArrayInfo ->
+        if (klass.getWasmArrayAnnotation() != null) {
             require(expression.valueArgumentsCount == 1) { "@WasmArrayOf constructs must have exactly one argument" }
             generateExpression(expression.getValueArgument(0)!!)
             body.buildRttCanon(context.transformType(klass.defaultType))

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/WasmModuleCodegenContextImpl.kt

@@ -21,7 +21,6 @@ import org.jetbrains.kotlin.ir.util.isFunction
 import org.jetbrains.kotlin.ir.util.parentAsClass
 import org.jetbrains.kotlin.wasm.ir.*
 
-
 class WasmModuleCodegenContextImpl(
     override val backendContext: WasmBackendContext,
     private val wasmFragment: WasmCompiledModuleFragment
@@ -100,8 +99,8 @@ class WasmModuleCodegenContextImpl(
         wasmFragment.globals.define(irField, wasmGlobal)
     }
 
-    override fun defineGcType(irClass: IrClassSymbol, wasmStruct: WasmTypeDeclaration) {
-        wasmFragment.gcTypes.define(irClass, wasmStruct)
+    override fun defineGcType(irClass: IrClassSymbol, wasmType: WasmTypeDeclaration) {
+        wasmFragment.gcTypes.define(irClass, wasmType)
     }
 
     override fun defineRTT(irClass: IrClassSymbol, wasmGlobal: WasmGlobal) {