libnumbertext: off-by-one in makefile rule (LIB=.. ineffective)

autoreconf line doesn't need it, it is the configure one that should
make use of it..

Change-Id: I1d7b492a8d99f8fbcb8443de7a7def2caaf8df3b
Reviewed-on: https://gerrit.libreoffice.org/56745
Tested-by: Jenkins
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>

external/libnumbertext/ExternalProject_libnumbertext.mk

@@ -30,8 +30,8 @@ $(call gb_ExternalProject_get_state_target,libnumbertext,build):
 	$(call gb_ExternalProject_run,build,\
 		$(if $(libnumbertext_LIBS),LIBS='$(libnumbertext_LIBS)') \
 		$(if $(filter IOS MACOSX,$(OS)),ACLOCAL="aclocal -I $(SRCDIR)/m4/mac") \
-		LIBS="$(gb_STDLIBS) $(LIBS)" \
 		autoreconf && \
+		LIBS="$(gb_STDLIBS) $(LIBS)" \
 		$(SHELL) ./configure --disable-shared --with-pic \
 			$(if $(verbose),--disable-silent-rules,--enable-silent-rules) \
 			$(if $(CROSS_COMPILING),--build=$(BUILD_PLATFORM) --host=$(HOST_PLATFORM))\