ck_{ht,internal}: Explicitly use unsigned for bitwise operations.

src/ck_ht.c

@@ -52,7 +52,7 @@
 #define CK_HT_BUCKET_SHIFT 1ULL
 #endif
 
-#define CK_HT_BUCKET_LENGTH (1 << CK_HT_BUCKET_SHIFT)
+#define CK_HT_BUCKET_LENGTH (1U << CK_HT_BUCKET_SHIFT)
 #define CK_HT_BUCKET_MASK (CK_HT_BUCKET_LENGTH - 1)
 #endif
 

src/ck_internal.h

@@ -88,7 +88,7 @@ ck_internal_bsf(unsigned long v)
 	const unsigned int s = sizeof(unsigned long) * 8 - 1;
 
 	for (i = 0; i < s; i++) {
-		if (v & (1 << (s - i)))
+		if (v & (1U << (s - i)))
 			return i;
 	}
 
@@ -102,7 +102,7 @@ ck_internal_bsf_64(uint64_t v)
 	const unsigned int s = sizeof(unsigned long) * 8 - 1;
 
 	for (i = 0; i < s; i++) {
-		if (v & (1 << (63 - i)))
+		if (v & (1U << (63U - i)))
 			return i;
 	}