Typo causing external/libnumbertext to always use $(gb_COMPILERNOOPTFLAGS)

...ever since f1579d3d "tdf#117171 support
localized number name numbering styles"

Change-Id: I93dcfa9f1310b35e3068a7e0efdce258364a7d78
Reviewed-on: https://gerrit.libreoffice.org/64720Reviewed-by: László Németh <nemeth@numbertext.org>
Tested-by: László Németh <nemeth@numbertext.org>
Tested-by: Jenkins
(cherry picked from commit 82af7584)
Reviewed-on: https://gerrit.libreoffice.org/64743Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

external/libnumbertext/ExternalProject_libnumbertext.mk

@@ -37,7 +37,7 @@ $(call gb_ExternalProject_get_state_target,libnumbertext,build):
 			$(if $(CROSS_COMPILING),--build=$(BUILD_PLATFORM) --host=$(HOST_PLATFORM))\
 			$(if $(filter AIX,$(OS)),CFLAGS="-D_LINUX_SOURCE_COMPAT") \
 			$(if $(libnumbertext_CPPFLAGS),CPPFLAGS='$(libnumbertext_CPPFLAGS)') \
-			CXXFLAGS="$(libnumbertext_CXXFLAGS) $(if $(ENABLE_OPTIMIZED) $(gb_COMPILEROPTFLAGS),$(gb_COMPILERNOOPTFLAGS)) $(if $(debug),$(gb_DEBUGINFO_FLAGS) $(gb_DEBUG_CXXFLAGS)) $(gb_VISIBILITY_FLAGS) $(gb_VISIBILITY_FLAGS_CXX)" \
+			CXXFLAGS="$(libnumbertext_CXXFLAGS) $(if $(ENABLE_OPTIMIZED),$(gb_COMPILEROPTFLAGS),$(gb_COMPILERNOOPTFLAGS)) $(if $(debug),$(gb_DEBUGINFO_FLAGS) $(gb_DEBUG_CXXFLAGS)) $(gb_VISIBILITY_FLAGS) $(gb_VISIBILITY_FLAGS_CXX)" \
 		&& cd src && $(MAKE) \
 	)