fix LOCK file deletion to prevent crash on windows
fix LOCK file deletion to prevent crash on windows

git-svn-id: 7cac25cdeb37bede60f109a11154338240e48514@61 62dab493-f737-651d-591e-8d6aee1b9529

yinquan529/platform-external-chromium_org-third_party-leveldatabase-src,AOSPU/external_chromium_org_third_party_leveldatabase_src,geekboxzone/lollipop_external_chromium_org_third_party_leveldatabase_src,bpsinc-native/src_third_party_leveldatabase_src,MIPS/external-chromium_org-third_party-leveldatabase-src,AOSPU/external_chromium_org_third_party_leveldatabase_src,android-ia/platform_external_chromium_org_third_party_leveldatabase_src,geekboxzone/lollipop_external_chromium_org_third_party_leveldatabase_src,bpsinc-native/src_third_party_leveldatabase_src,android-ia/platform_external_chromium_org_third_party_leveldatabase_src,yinquan529/platform-external-chromium_org-third_party-leveldatabase-src,IllusionRom-deprecated/android_platform_external_chromium_org_third_party_leveldatabase_src,Omegaphora/external_chromium_org_third_party_leveldatabase_src,MIPS/external-chromium_org-third_party-leveldatabase-src,yinquan529/platform-external-chromium_org-third_party-leveldatabase-src,xin3liang/platform_external_chromium_org_third_party_leveldatabase_src,xin3liang/platform_external_chromium_org_third_party_leveldatabase_src,android-ia/platform_external_chromium_org_third_party_leveldatabase_src,Omegaphora/external_chromium_org_third_party_leveldatabase_src,geekboxzone/lollipop_external_chromium_org_third_party_leveldatabase_src,AOSPU/external_chromium_org_third_party_leveldatabase_src,Omegaphora/external_chromium_org_third_party_leveldatabase_src,bpsinc-native/src_third_party_leveldatabase_src,IllusionRom-deprecated/android_platform_external_chromium_org_third_party_leveldatabase_src