Invert 'if' statements to reduce nesting.

DVD/Dump.cs

@@ -372,13 +372,13 @@ public sealed class Dump
                 case CopyrightType.CPRM: throw new NotImplementedException();
             }
 
-            if(!sense)
-            {
+            if(sense)
+                continue;
+
             Agid = (byte)(buffer[7] >> 6);
 
             break;
         }
-        }
 
         if(sense)
             return true;
@@ -411,13 +411,13 @@ public sealed class Dump
                 break;
             }
 
-            if(i >= 31)
-            {
+            if(i < 31)
+                continue;
+
             senseBuffer = Array.Empty<byte>();
 
             return true;
         }
-        }
 
         sense = ReportChallenge(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout, out duration);