fix: reduce code complexity (#130)

Author: bdraco

src/bluetooth_data_tools/gap.pxd

@@ -49,6 +49,5 @@ cpdef parse_advertisement_data(object data)
     offset=cython.uint,
     start=cython.uint,
     end=cython.uint,
-    tx_power_int="unsigned char"
 )
 cpdef _uncached_parse_advertisement_data(tuple data)

src/bluetooth_data_tools/gap.py

@@ -180,15 +180,14 @@ def _uncached_parse_advertisement_data(
                 continue
             start = offset + 2
             end = start + length - 1
+            offset += 1 + length
             if end > total_length or end - start <= 0:
                 _LOGGER.debug(
                     "Invalid BLE GAP AD structure at offset %s: %s (%s)",
                     offset,
                     gap_bytes,
                 )
-                offset += 1 + length
                 continue
-            offset += 1 + length
             if gap_type_num == TYPE_SHORT_LOCAL_NAME and local_name is None:
                 local_name = gap_data[start:end].decode("utf-8", "replace")
             elif gap_type_num == TYPE_COMPLETE_LOCAL_NAME: