prepo: Silent error while parsing report (#837)

Due to a guessed parsing implementation of the report, sometime it throw an error, since the data isn't really useful, it's better to silent possible exceptions with a message.

Ryujinx.HLE/HOS/Services/Prepo/IPrepoService.cs

@@ -93,6 +93,8 @@ namespace Ryujinx.HLE.HOS.Services.Prepo
 
             sb.AppendLine($" Room: {room}");
 
+            try
+            {
                 using (MemoryStream stream = new MemoryStream(buffer))
                 using (BinaryReader reader = new BinaryReader(stream))
                 {
@@ -181,6 +183,11 @@ namespace Ryujinx.HLE.HOS.Services.Prepo
                         }
                     }
                 }
+            }
+            catch (Exception)
+            {
+                sb.AppendLine("  Error while parsing the report buffer.");
+            }
 
             return sb.ToString();
         }