Fix error when member is not found with string key during PDT interpretation.

Assets/Cryville/Common/Pdt/PdtInterpreter.cs

@@ -266,7 +266,7 @@ namespace Cryville.Common.Pdt {
 			else {
 				MemberInfo prop = null;
 				bool flag = false;
-				if (pkey is string) prop = ReflectionHelper.GetMember(type, (string)pkey);
+				if (pkey is string) prop = ReflectionHelper.TryGetMember(type, (string)pkey);
 				if (prop == null) flag = ReflectionHelper.TryFindMemberWithAttribute<T>(type, out prop);
 				if (prop == null) throw new MissingMemberException(string.Format("The property \"{0}\" is not found", pkey));
 				Type ptype = ReflectionHelper.GetMemberType(prop);

Assets/Cryville/Common/ReflectionHelper.cs

@@ -90,6 +90,22 @@ namespace Cryville.Common {
 			return mil[0];
 		}
 
+		/// <summary>
+		/// Tries to get the member from a type with the specified name.
+		/// </summary>
+		/// <param name="type">The type.</param>
+		/// <param name="name">The name of the member.</param>
+		/// <returns>The member. <see langword="null" /> when not found.</returns>
+		public static MemberInfo TryGetMember(Type type, string name) {
+			var mil = type.GetMember(
+				name,
+				MemberTypes.Field | MemberTypes.Property,
+				BindingFlags.Public | BindingFlags.Instance
+			);
+			if (mil.Length != 1) return null;
+			return mil[0];
+		}
+
 		/// <summary>
 		/// Gets the type of a member.
 		/// </summary>