Refactor arena_run_alloc().
Refactor arena_run_alloc().

Refactor duplicated arena_run_alloc() code into
arena_run_alloc_helper().

geekboxzone/lollipop_external_jemalloc,wespelee/jemalloc,percona/jemalloc-debian,xin3liang/platform_external_jemalloc,wqfish/jemalloc,VRToxin/android_external_jemalloc,geekboxzone/lollipop_external_jemalloc,VRToxin/android_external_jemalloc,kmiku7/jemalloc,TeamExodus/external_jemalloc,sudosurootdev/external_jemalloc,vashstorm/jemalloc,wqfish/jemalloc,vashstorm/jemalloc,TeamExodus/external_jemalloc,CyanogenMod/android_external_jemalloc,xin3liang/platform_external_jemalloc,cpeterso/jemalloc,Dmitry-Me/jemalloc,splbio/jemalloc,Snaipe/jemalloc,8l/jemalloc,vashstorm/jemalloc,tempbottle/jemalloc,android-ia/platform_external_jemalloc,yy-nm/jemalloc,TeamExodus/external_jemalloc,glandium/jemalloc,android-ia/platform_external_jemalloc,AndroidExternal/jemalloc,garoose/jemalloc,leebaok/jemalloc-4.2.1-readcode,flyfeifan/jemalloc,ahmetmircik/jemalloc,xin3liang/platform_external_jemalloc,yy-nm/jemalloc,wespelee/jemalloc,ahmetmircik/jemalloc,wespelee/jemalloc,geekboxzone/mmallow_external_jemalloc,lilothar/jemalloc,Dmitry-Me/jemalloc,TeamExodus/external_jemalloc,cpeterso/jemalloc,wqfish/jemalloc,kmiku7/jemalloc,shekkbuilder/jemalloc,shekkbuilder/jemalloc,tempbottle/jemalloc,geekboxzone/mmallow_external_jemalloc,dxq-git/jemalloc,ahmetmircik/jemalloc,sudosurootdev/external_jemalloc,leebaok/jemalloc-4.2.1-readcode,sudosurootdev/external_jemalloc,garoose/jemalloc,CMRemix/android_external_jemalloc,dxq-git/jemalloc,flyfeifan/jemalloc,percona/jemalloc-debian,wfxiang08/jemalloc,awreece/jemalloc,kmiku7/jemalloc,glandium/jemalloc,Snaipe/jemalloc,percona/jemalloc-debian,ahmetmircik/jemalloc,flyfeifan/jemalloc,Snaipe/jemalloc,lilothar/jemalloc,tempbottle/jemalloc,wfxiang08/jemalloc,8l/jemalloc,geekboxzone/mmallow_external_jemalloc,percona/jemalloc-debian,CMRemix/android_external_jemalloc,kmiku7/jemalloc,leebaok/jemalloc-4.2.1-readcode,VRToxin/android_external_jemalloc,Dmitry-Me/jemalloc,geekboxzone/mmallow_external_jemalloc,glandium/jemalloc,lvfeng1130/jemalloc,splbio/jemalloc,shekkbuilder/jemalloc,Dmitry-Me/jemalloc,CyanogenMod/android_external_jemalloc,garoose/jemalloc,CyanogenMod/android_external_jemalloc,sudosurootdev/external_jemalloc,AndroidExternal/jemalloc,yy-nm/jemalloc,flyfeifan/jemalloc,jemalloc/jemalloc-cmake,awreece/jemalloc,android-ia/platform_external_jemalloc,wqfish/jemalloc,cpeterso/jemalloc,wqfish/jemalloc,VRToxin/android_external_jemalloc,lvfeng1130/jemalloc,dxq-git/jemalloc,AndroidExternal/jemalloc,dxq-git/jemalloc,geekboxzone/lollipop_external_jemalloc,shekkbuilder/jemalloc,jemalloc/jemalloc-cmake,vashstorm/jemalloc,tempbottle/jemalloc,leebaok/jemalloc-4.2.1-readcode,CMRemix/android_external_jemalloc,AndroidExternal/jemalloc,lvfeng1130/jemalloc,jemalloc/jemalloc-cmake,awreece/jemalloc,CyanogenMod/android_external_jemalloc,wfxiang08/jemalloc,CMRemix/android_external_jemalloc,glandium/jemalloc,xin3liang/platform_external_jemalloc,8l/jemalloc,yy-nm/jemalloc,geekboxzone/lollipop_external_jemalloc,garoose/jemalloc,Snaipe/jemalloc,lilothar/jemalloc,wfxiang08/jemalloc,android-ia/platform_external_jemalloc,lvfeng1130/jemalloc,cpeterso/jemalloc,8l/jemalloc,splbio/jemalloc,awreece/jemalloc,lilothar/jemalloc,jemalloc/jemalloc-cmake,wespelee/jemalloc