fix own-cairo edge case build

Change-Id: I787c5e5a53f93b3a3bb511fe0bbd107ef7963ec7
Reviewed-on: https://gerrit.libreoffice.org/59663
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

external/cairo/ExternalPackage_cairo.mk

@@ -14,7 +14,7 @@ $(eval $(call gb_ExternalPackage_use_external_project,cairo,cairo))
 ifneq ($(DISABLE_DYNLOADING),TRUE)
 ifneq ($(OS),ANDROID)
 
-$(eval $(call gb_ExternalPackage_add_file,cairo,$(LIBO_LIB_FOLDER)/libcairo.so.2,src/.libs/libcairo.so.2.115.$(CAIRO_VERSION_MICRO).0))
+$(eval $(call gb_ExternalPackage_add_file,cairo,$(LIBO_LIB_FOLDER)/libcairo.so.2,src/.libs/libcairo.so.2.115$(CAIRO_VERSION_MICRO).0))
 
 endif
 endif