build: fix build warning of c-ares under GN build · nodejs/node@04798fb

nodejs

Original file line number	Diff line number	Diff line change
`@@ -65,11 +65,17 @@ template("cares_gn_build") {`
`65`	`65`	`sources += gypi_values.cares_sources_mac`
`66`	`66`	`}`
`67`	`67`
`68`		`-if (is_clang \|\| !is_win) {`
`69`		`-cflags_c = [`
`70`		`-"-Wno-implicit-fallthrough",`
`71`		`-"-Wno-unreachable-code",`
`72`		`- ]`
	`68`	`+if (is_clang) {`
	`69`	`+if (is_win) {`
	`70`	`+cflags_c = [`
	`71`	`+"-Wno-macro-redefined",`
	`72`	`+ ]`
	`73`	`+ } else {`
	`74`	`+cflags_c = [`
	`75`	`+"-Wno-implicit-fallthrough",`
	`76`	`+"-Wno-unreachable-code",`
	`77`	`+ ]`
	`78`	`+ }`
`73`	`79`	`}`
`74`	`80`	`}`
`75`	`81`	`}`