RepositoryExternal: move that out of gb_LinkTarget__use_breakpad

otherwise package would be registered multiple times, looks like one
tinderbox fails due to that.

Change-Id: I3bcbc9fff1e1993ae30cda634a50f815a30bc094

RepositoryExternal.mk

@@ -3368,13 +3368,12 @@ endif
 
 $(call gb_LinkTarget_use_external_project,$(1),breakpad)
 
+endef
+
 $(eval $(call gb_Helper_register_packages_for_install,ooo,\
 	breakpad \
 ))
 
-
-endef
-
 # else # SYSTEM_LIBBREAKPAD
 # 
 # define gb_LinkTarget__use_libgltf