patterns: Make std::mem::find_sequence_in_range return -1 when no sequence is found

plugins/builtin/source/content/pl_builtin_functions.cpp

@@ -139,7 +139,7 @@ namespace hex::plugin::builtin {
                     }
                 }
 
-                LogConsole::abortEvaluation("failed to find sequence");
+                return i128(-1);
             });
 
             /* read_unsigned(address, size) */