[hackers] [blind] Fix makefile || Mattias Andrée

[git]

commit 7ee326b71e1846c3b79be5aea9d9bfd94ef5aa38
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Tue Dec 5 23:19:23 2017 +0100
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Tue Dec 5 23:19:23 2017 +0100

    Fix makefile
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/Makefile b/Makefile
index 92e2977..c92f925 100644
--- a/Makefile
+++ b/Makefile
@@ -155,7 +155,7 @@ EXAMPLEFILES =\
        reverse/Makefile\
        split/Makefile
 
-COMMON_SRC = $(COMMON_SRC:.o=.c)
+COMMON_SRC = $(COMMON_OBJ:.o=.c)
 SRC = $(BIN:=.c) $(COMMON_SRC)
 SCRIPTS = $(SH_SCRIPTS) $(KSH_SCRIPTS) 
 MAN1 = $(BIN:=.1) $(SCRIPTS:=.1)