cleanup: remove unnecessary spaces

src/sdl.mk

@@ -31,7 +31,7 @@ define $(PKG)_BUILD
     $(MAKE) -C '$(1)' -j '$(JOBS)' bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
     $(MAKE) -C '$(1)' -j 1 install bin_PROGRAMS= sbin_PROGRAMS= noinst_PROGRAMS=
     ln -sf $(PREFIX)/$(TARGET)/bin/sdl-config $(PREFIX)/bin/$(TARGET)-sdl-config
-    
+
     '$(TARGET)-gcc' \
         -W -Wall -Werror -ansi -pedantic \
         '$(2).c' -o '$(PREFIX)/$(TARGET)/bin/test-sdl.exe' \