lib/Makefile.am: whitespace fix

Signed-off-by: Alon Levy <alevy@redhat.com>
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 69edc1b..b6198b6 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -9,7 +9,8 @@
 				extension.c \
 				extension-deflate-stream.c extension-deflate-stream.h \
 				private-libwebsockets.h
-				
+
+
 if EXT_GOOGLE_MUX
 dist_libwebsockets_la_SOURCES += extension-x-google-mux.c extension-x-google-mux.h
 endif