Fix NON_EXHAUSTIVE_WHEN_STATEMENT warnings in project code

wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/convertors/WasmIrToBinary.kt

@@ -27,6 +27,7 @@ class WasmIrToBinary(outputStream: OutputStream, val module: WasmModule) {
                     when (it) {
                         is WasmStructDeclaration -> appendStructTypeDeclaration(it)
                         is WasmArrayDeclaration -> appendArrayTypeDeclaration(it)
+                        is WasmFunctionType -> {}
                     }
                 }
             }

wasm/wasm.ir/test/org/jetbrains/kotlin/wasm/ir/SpecTestRunner.kt

@@ -130,11 +130,9 @@ data class SpecTest(
 
 private fun runSpecTest(specTest: SpecTest, testDir: File, wastFile: File, wabtOptions: List<String>) {
     for (command in specTest.commands) {
-        when (command) {
-            is SpecTest.Command.Module -> {
-                val wasmFile = File(testDir, command.filename)
-                testWasmFile(wasmFile, testDir.name)
-            }
+        if (command is SpecTest.Command.Module) {
+            val wasmFile = File(testDir, command.filename)
+            testWasmFile(wasmFile, testDir.name)
         }
     }
 }