ns_gige: Fix a missing curly brace in if-statement
ns_gige: Fix a missing curly brace in if-statement

This patch adds a missing curly brace when clearing and setting the
appropriate bits in the ns_gige.cc code.

This commit is not based on any runtime bug experienced, but rather
inspection of the code.

haowu4682/gem5,haowu4682/gem5,LingxiaoJIA/gem5,LingxiaoJIA/gem5,LingxiaoJIA/gem5,haowu4682/gem5,haowu4682/gem5,haowu4682/gem5,haowu4682/gem5,LingxiaoJIA/gem5,haowu4682/gem5,haowu4682/gem5,LingxiaoJIA/gem5,LingxiaoJIA/gem5,LingxiaoJIA/gem5,haowu4682/gem5