fix blog_url limit length
fix blog_url limit length

wyrover/phphub,TimeFinger/earth-diary.org,Denniskevin/phphub-1,iBcker/phphub,TimeFinger/earth-diary.org,Calinou/phphub,yaoshanliang/phphub,YogiAi/bdicclub,wmydz1/phphub,Denniskevin/phphub-1,joy696163/phphub,wyrover/phphub,waiducom/phphub,summerblue/phphub,summerblue/phphub,falconchen/phphub,dut3062796s/phphub,Denniskevin/phphub-1,waiducom/phphub,Calinou/phphub,waiducom/phphub,wmydz1/phphub,yaoshanliang/phphub,yaoshanliang/phphub,joy696163/phphub,wmydz1/phphub,falconchen/phphub,philip8728/phphub,philip8728/phphub,philip8728/phphub,falconchen/phphub,joy696163/phphub,ventoviro/forum,ventoviro/forum,wyrover/phphub,summerblue/phphub,Calinou/phphub,dut3062796s/phphub,iBcker/phphub,iBcker/phphub,TimeFinger/earth-diary.org,YogiAi/bdicclub,YogiAi/bdicclub,ventoviro/forum,dut3062796s/phphub