man(9): Some markup fixes

- whitespace at end of input line
- skipping paragraph macro: Pp after Sh

MFC after:	3 days

share/man/man9/EVENTHANDLER.9

@@ -299,7 +299,7 @@ Callback invoked when an interfance has been removed from an interface group.
 .It Vt ifaddr_event
 Callbacks invoked when an address is set up on a network interface.
 .It Vt ifaddr_event_ext
-Callback invoked when an address has been added or removed from an interface. 
+Callback invoked when an address has been added or removed from an interface.
 .It Vt if_clone_event
 Callbacks invoked when an interface is cloned.
 .It Vt iflladdr_event

share/man/man9/OF_node_from_xref.9

@@ -64,7 +64,7 @@ the values of "phandle" properties.
 and
 .Fn OF_xref_from_node
 are used to perform conversion between these two kinds of node
-identifiers. 
+identifiers.
 .Pp
 .Fn OF_node_from_xref
 returns the kernel phandle for the effective phandle

share/man/man9/ieee80211.9

@@ -706,7 +706,7 @@ and were later ported to
 This man page was updated with the information from
 .Nx
 .Nm
-man page. 
+man page.
 .Sh AUTHORS
 .An -nosplit
 The original

share/man/man9/socket.9

@@ -56,7 +56,7 @@
 .Fn sodisconnect "struct socket *so"
 .Ft void
 .Fo sodtor_set
-.Fa "struct socket *so" 
+.Fa "struct socket *so"
 .Fa "void (*func)(struct socket *)"
 .Fc
 .Ft struct  sockaddr *

share/man/man9/tcp_functions.9

@@ -281,8 +281,9 @@ for that socket, the kernel will call the function pointed to by the
 .Va tfb_tcp_handoff_ok
 field.
 The function should return 0 if the user is allowed to switch the socket to use
-the TCP stack. Otherwise, the function should return an error code, which will
-be returned to the user.
+the TCP stack.
+Otherwise, the function should return an error code, which will be returned to
+the user.
 If the
 .Va tfb_tcp_handoff_ok
 field is

share/man/man9/ucred.9

@@ -143,7 +143,6 @@ and appropriately sets fields in the latter that are not present in
 the former
 (e.g.,
 .Va cr_version ) .
-.Pp
 .Sh RETURN VALUES
 .Fn crget ,
 .Fn crhold ,