possible bug in smap Makefile

LIBS can have a previous value, as depicted in ./configure --help

"Some influential environment variables:
(...)
 LIBS        libraries to pass to the linker, e.g. -l<library>
"
Original assignation to LIBS overwrites this value. With this edition, the user defined flags and NCURSES ones are both employed by the linker.

src/smap/Makefile.am

@@ -6,7 +6,7 @@
 
 AUTOMAKE_OPTIONS = foreign
 
-LIBS=$(NCURSES)
+LIBS+= $(NCURSES)
 AM_CPPFLAGS = -I$(top_srcdir) $(BG_INCLUDES)
 
 if BUILD_SMAP