kern: for pointers replace 0 with NULL.

These are mostly cosmetical, no functional change.

Found with devel/coccinelle.

4 files changed, 4 insertions, 4 deletions

diff --git a/sys/libkern/strtol.c b/sys/libkern/strtol.c
index 4d64025..ea7dd55 100644
--- a/sys/libkern/strtol.c
+++ b/sys/libkern/strtol.c
@@ -123,7 +123,7 @@ strtol(nptr, endptr, base)
 		acc = neg ? LONG_MIN : LONG_MAX;
 	} else if (neg)
 		acc = -acc;
-	if (endptr != 0)
+	if (endptr != NULL)
 		*endptr = __DECONST(char *, any ? s - 1 : nptr);
 	return (acc);
 }
diff --git a/sys/libkern/strtoq.c b/sys/libkern/strtoq.c
index d855056..e83adb1 100644
--- a/sys/libkern/strtoq.c
+++ b/sys/libkern/strtoq.c
@@ -124,7 +124,7 @@ strtoq(const char *nptr, char **endptr, int base)
 		acc = neg ? QUAD_MIN : QUAD_MAX;
 	} else if (neg)
 		acc = -acc;
-	if (endptr != 0)
+	if (endptr != NULL)
 		*endptr = __DECONST(char *, any ? s - 1 : nptr);
 	return (acc);
 }
diff --git a/sys/libkern/strtoul.c b/sys/libkern/strtoul.c
index f7399dc..44adf5a 100644
--- a/sys/libkern/strtoul.c
+++ b/sys/libkern/strtoul.c
@@ -102,7 +102,7 @@ strtoul(nptr, endptr, base)
 		acc = ULONG_MAX;
 	} else if (neg)
 		acc = -acc;
-	if (endptr != 0)
+	if (endptr != NULL)
 		*endptr = __DECONST(char *, any ? s - 1 : nptr);
 	return (acc);
 }
diff --git a/sys/libkern/strtouq.c b/sys/libkern/strtouq.c
index f8303a0..49c3750 100644
--- a/sys/libkern/strtouq.c
+++ b/sys/libkern/strtouq.c
@@ -101,7 +101,7 @@ strtouq(const char *nptr, char **endptr, int base)
 		acc = UQUAD_MAX;
 	} else if (neg)
 		acc = -acc;
-	if (endptr != 0)
+	if (endptr != NULL)
 		*endptr = __DECONST(char *, any ? s - 1 : nptr);
 	return (acc);
 }