fix: examples build-in errors

Author: enghitalo

examples/basic.v

@@ -73,7 +73,14 @@ fn main() {
 	// decode bytes
 	println('ts decoded:')
 	mut decoder := msgpack.new_decoder()
-	decoder.decode[TestStructA](encoded) or { panic('error decoding: ${err}') }
+
+	mut val := TestStructA{}
+	decoder.decode[TestStructA](encoded, mut val) or { error('error decoding: ${err}') }
+
+	result := msgpack.decode[TestStructA](encoded) or {
+		eprintln('error decoding: ${err}')
+		return
+	}
 
 	// decode string
 	// decoder.decode(encoder.b)

examples/bench_msgpack_json_vs_json2.v

@@ -63,10 +63,9 @@ fn main() {
 
 	encoded := msgpack.encode[Person](p)
 	dump(encoded#[0..10])
-	mut decoder := msgpack.new_decoder()
 	for _ in 0 .. max_iterations {
 		// TODO: investigate why decoder.decode does not return a result at all :-|
-		decoder.decode[Person](encoded)!
+		msgpack.decode[Person](encoded)!
 	}
 	b.measure('msgpack.decode')
 }