ext4: remove trailing newlines from ext4_msg() and ext4_error() messages

The functions ext4_msg() and ext4_error() already tack on a trailing
newline, so remove the unnecessary extra newline.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --cc fs/ext4/ialloc.c
Simple merge

diff --cc fs/ext4/inode.c
Simple merge

diff --cc fs/ext4/mballoc.c
Simple merge