Revert r299279:

Simplify redundant malloc'ing in sed -e.

It is causing havoc in the ports tree:

===>  Configuring for wxsvg-1.5.7
sed: 1: "/gcc_dir=\\`/s/gcc /$CC /": bad flag in substitute command: '/'
*** Error code 1

===>  Patching for vips-8.3.1
sed: 1: "1s|^#![[:space:]]*/usr/ ...": bad flag in substitute command: 's'
*** Error code 1

PR:		195929
Reported by:	danilo

1 files changed, 6 insertions, 1 deletions

diff --git a/usr.bin/sed/main.c b/usr.bin/sed/main.c
index a5ff462..36a3299 100644
--- a/usr.bin/sed/main.c
+++ b/usr.bin/sed/main.c
@@ -125,6 +125,7 @@ int
 main(int argc, char *argv[])
 {
 	int c, fflag;
+	char *temp_arg;
 
 	(void) setlocale(LC_ALL, "");
 
@@ -146,7 +147,11 @@ main(int argc, char *argv[])
 			break;
 		case 'e':
 			eflag = 1;
-			add_compunit(CU_STRING, optarg);
+			if ((temp_arg = malloc(strlen(optarg) + 2)) == NULL)
+				err(1, "malloc");
+			strcpy(temp_arg, optarg);
+			strcat(temp_arg, "\n");
+			add_compunit(CU_STRING, temp_arg);
 			break;
 		case 'f':
 			fflag = 1;