enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/drivers/usb/image/mdc800.c
..
..
@@ -880,7 +880,7 @@
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 						return -EIO;
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 					}
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 					mdc800->pic_len=-1;
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-					/* fall through */
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+					fallthrough;
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 				case 0x09: /* Download Thumbnail */
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 					mdc800->download_left=answersize+64;