add missing backslash-before-newline in usage message

diff --git a/src/sort.c b/src/sort.c
index 04ac265f4d01694a0d354f9860b36f9bf827266e..9e7de66d073131e0bd46abd97050c791e9cef3ed 100644 (file)
--- a/src/sort.c
+++ b/src/sort.c
@@ -300,7 +300,7 @@ Write sorted concatenation of all FILE(s) to standard output.\n\
   -i               consider only [\\040-\\0176] characters in keys\n\
   -k POS1[,POS2]   start a key at POS1, end it *at* POS2\n\
                     field numbers and character offsets are numbered\n\
-                     starting with one (contrast with zero-based +POS form)\n
+                     starting with one (contrast with zero-based +POS form)\n\
   -m               merge already sorted files, do not sort\n\
   -M               compare (unknown) < `JAN' < ... < `DEC', imply -b\n\
   -n               compare according to string numerical value, imply -b\n\