ioctl_getfsmap.2, membarrier.2, seccomp.2: spfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/ioctl_getfsmap.2

@@ -345,7 +345,7 @@ The pointer passed in was not mapped to a valid memory address.
 .B EINVAL
 The array is not long enough, the keys do not point to a valid part of
 the filesystem, the low key points to a higher point in the filesystem's
-physical storage address space than the high key, or a non-zero value
+physical storage address space than the high key, or a nonzero value
 was passed in one of the fields that must be zero.
 .TP
 .B ENOMEM

man2/membarrier.2

@@ -162,7 +162,7 @@ set to 0, error handling is required only for the first call to
 .I cmd
 is invalid, or
 .I flags
-is non-zero, or the
+is nonzero, or the
 .BR MEMBARRIER_CMD_SHARED
 command is disabled because the
 .I nohz_full

man2/seccomp.2

@@ -160,7 +160,7 @@ other privileged program using
 thus potentially compromising that program.
 (Such a malicious filter might, for example, cause an attempt to use
 .BR setuid (2)
-to set the caller's user IDs to non-zero values to instead
+to set the caller's user IDs to nonzero values to instead
 return 0 without actually making the system call.
 Thus, the program might be tricked into retaining superuser privileges
 in circumstances where it is possible to influence it to do