Commit7628f40

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修复 sdscpylen 的注释，感谢 KevinQi 的提醒:

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Lines changed: 4 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -378,7 +378,7 @@ sds sdscatsds(sds s, const sds t) {`
`378`	`378`	`/*`
`379`	`379`	`* 将一个 char 数组的前 len 个字节复制至 sds`
`380`	`380`	`* 如果 sds 的 buf 不足以容纳要复制的内容，`
`381`		`- * 那么扩展 buf 的长度，让 buf的长度为 len 。`
	`381`	`+ * 那么扩展 buf 的长度，让 buf的长度大于等于 len 。`
`382`	`382`	`*`
`383`	`383`	`* T = O(N)`
`384`	`384`	`*/`
`@@ -389,7 +389,9 @@ sds sdscpylen(sds s, const char *t, size_t len) {`
`389`	`389`	`// 是否需要扩展 buf ？`
`390`	`390`	`size_ttotlen=sh->free+sh->len;`
`391`	`391`	`if (totlen<len) {`
`392`		`-// 扩展 buf 长度，长度刚好为 len`
	`392`	`+// 扩展 buf 长度，让它的长度大于等于 len`
	`393`	`+// 具体的大小请参考 sdsMakeRoomFor 的注释`
	`394`	`+// T = O(N)`
`393`	`395`	`s=sdsMakeRoomFor(s,len-sh->len);`
`394`	`396`	`if (s==NULL)returnNULL;`
`395`	`397`	`sh= (void*) (s-(sizeof(structsdshdr)));`

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