Fix arena_sdalloc() to use promoted size (second attempt).
Fix arena_sdalloc() to use promoted size (second attempt).

Unlike the preceeding attempted fix, this version avoids the potential
for converting an invalid bin index to a size class.

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