curl: we really want --with-darwinssl on Mac for libcmis

(regression from 2fd70b6b)

Change-Id: I9e1d4d17582011a067aecf47144bb70643fac806

external/curl/ExternalProject_curl.mk

@@ -35,14 +35,16 @@ ifeq ($(SYSTEM_NSS),NO)
 curl_CPPFLAGS += -I$(call gb_UnpackedTarball_get_dir,nss)/dist/public/nss
 endif
 
+# use --with-darwinssl on Mac to get a native UI for SSL certs for CMIS usage
 $(call gb_ExternalProject_get_state_target,curl,build):
 	$(call gb_ExternalProject_run,build,\
 		CPPFLAGS="$(curl_CPPFLAGS)" \
 		LDFLAGS=$(curl_LDFLAGS) \
 		./configure \
-			$(if $(filter IOS,$(OS)),--with-darwinssl,--without-ssl) \
-			$(if $(filter MACOSX,$(OS)),,\
+			$(if $(filter MACOSX IOS,$(OS)),\
+				--with-darwinssl, \
 				--with-nss$(if $(filter NO,$(SYSTEM_NSS)),="$(call gb_UnpackedTarball_get_dir,nss)/dist/out")) \
+			--without-ssl \
 			--without-libidn --enable-ftp --enable-ipv6 --enable-http --disable-gopher \
 			--disable-file --disable-ldap --disable-telnet --disable-dict --without-libssh2 \
 			$(if $(filter YES,$(CROSS_COMPILING)),--build=$(BUILD_PLATFORM) --host=$(HOST_PLATFORM)) \