patch 7.4.1906

Problem:    Collapsing channel buffers and searching for NL does not work
            properly. (Xavier de Gary, Ramel Eshed)
Solution:   Do not assume the buffer contains a NUL or not.  Change NUL bytes
            to NL to avoid the string is truncated.

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1906,
 /**/
     1905,
 /**/