Remove -Wno-shift-op-parentheses for fusl build

fusl/src/locale/iconv.c

Index: fusl/src/locale/iconv.c
diff --git a/fusl/src/locale/iconv.c b/fusl/src/locale/iconv.c
index 1eeea94e0a38753691269b978f105b5e65ee33b8..00b6ce44ec92b83e1f26f3ea8836df4e07ac128e 100644
--- a/fusl/src/locale/iconv.c
+++ b/fusl/src/locale/iconv.c
@@ -135,7 +135,7 @@ static void put_16(unsigned char *s, unsigned c, int e)
 static unsigned get_32(const unsigned char *s, int e)
 {
 	e &= 3;
-	return s[e]+0U<<24 | s[e^1]<<16 | s[e^2]<<8 | s[e^3];
+	return ((unsigned)s[e])<<24 | s[e^1]<<16 | s[e^2]<<8 | s[e^3];
 }
 
 static void put_32(unsigned char *s, unsigned c, int e)
@@ -366,7 +366,7 @@ size_t iconv(iconv_t cd0, char **restrict in, size_t *restrict inb, char **restr
 			if (c < 128+type) break;
 			c -= 128+type;
 			c = legacy_chars[ map[c*5/4]>>2*c%8 |
-				map[c*5/4+1]<<8-2*c%8 & 1023 ];
+				map[c*5/4+1]<<(8-2*c%8) & 1023 ];
 			if (!c) c = *(unsigned char *)*in;
 			if (c==1) goto ilseq;
 		}
@@ -401,7 +401,7 @@ size_t iconv(iconv_t cd0, char **restrict in, size_t *restrict inb, char **restr
 			d = c;
 			for (c=0; c<128-totype; c++) {
 				if (d == legacy_chars[ tomap[c*5/4]>>2*c%8 |
-					tomap[c*5/4+1]<<8-2*c%8 & 1023 ]) {
+					tomap[c*5/4+1]<<(8-2*c%8) & 1023 ]) {
 					c += 128;
 					goto revout;
 				}