ecma_get_chars_collection_length optimization
ecma_get_chars_collection_length optimization

JerryScript-DCO-1.0-Signed-off-by: Xin Hu Xin.A.Hu@intel.com

glistening/jerryscript,akosthekiss/jerryscript,tilmannOSG/jerryscript,gabrielschulhof/jerryscript,bsdelf/jerryscript,jack60504/jerryscript,zherczeg/jerryscript,akosthekiss/jerryscript,bsdelf/jerryscript,gabrielschulhof/jerryscript,jerryscript-project/jerryscript,gabrielschulhof/jerryscript,bzsolt/jerryscript,loki04/jerryscript,dbatyai/jerryscript,yichoi/jerryscript,tilmannOSG/jerryscript,bzsolt/jerryscript,tilmannOSG/jerryscript,yichoi/jerryscript,slaff/jerryscript,akosthekiss/jerryscript,LeeHayun/jerryscript,dbatyai/jerryscript,bsdelf/jerryscript,bzsolt/jerryscript,tilmannOSG/jerryscript,martijnthe/jerryscript,LaszloLango/jerryscript,dbatyai/jerryscript,bsdelf/jerryscript,robertsipka/jerryscript,glistening/jerryscript,slaff/jerryscript,loki04/jerryscript,glistening/jerryscript,zherczeg/jerryscript,slaff/jerryscript,bzsolt/jerryscript,robertsipka/jerryscript,glistening/jerryscript,LaszloLango/jerryscript,jerryscript-project/jerryscript,grgustaf/jerryscript,yichoi/jerryscript,robertsipka/jerryscript,LeeHayun/jerryscript,jack60504/jerryscript,zherczeg/jerryscript,slaff/jerryscript,akosthekiss/jerryscript,loki04/jerryscript,LaszloLango/jerryscript,grgustaf/jerryscript,grgustaf/jerryscript,jack60504/jerryscript,martijnthe/jerryscript,grgustaf/jerryscript,martijnthe/jerryscript,tilmannOSG/jerryscript,jack60504/jerryscript,jerryscript-project/jerryscript,loki04/jerryscript,LeeHayun/jerryscript,yichoi/jerryscript,yichoi/jerryscript,glistening/jerryscript,martijnthe/jerryscript,bsdelf/jerryscript,dbatyai/jerryscript,grgustaf/jerryscript,jerryscript-project/jerryscript,gabrielschulhof/jerryscript,jack60504/jerryscript,robertsipka/jerryscript,martijnthe/jerryscript,slaff/jerryscript,LeeHayun/jerryscript,jerryscript-project/jerryscript,LeeHayun/jerryscript,gabrielschulhof/jerryscript,zherczeg/jerryscript,jack60504/jerryscript,LaszloLango/jerryscript,martijnthe/jerryscript,dbatyai/jerryscript,bsdelf/jerryscript,LaszloLango/jerryscript,loki04/jerryscript,robertsipka/jerryscript,grgustaf/jerryscript,robertsipka/jerryscript,bzsolt/jerryscript,akosthekiss/jerryscript,glistening/jerryscript,zherczeg/jerryscript,loki04/jerryscript