Fix a typo in case of single thread/process execution in test262 harness (#4223)
Fix a typo in case of single thread/process execution in test262 harness (#4223)

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.usz@partner.samsung.com
bzsolt/jerryscript,dbatyai/jerryscript,zherczeg/jerryscript,dbatyai/jerryscript,robertsipka/jerryscript,jerryscript-project/jerryscript,akosthekiss/jerryscript,jerryscript-project/jerryscript,bzsolt/jerryscript,zherczeg/jerryscript,bzsolt/jerryscript,dbatyai/jerryscript,akosthekiss/jerryscript,akosthekiss/jerryscript,dbatyai/jerryscript,dbatyai/jerryscript,zherczeg/jerryscript,bzsolt/jerryscript,jerryscript-project/jerryscript,akosthekiss/jerryscript,zherczeg/jerryscript,jerryscript-project/jerryscript,robertsipka/jerryscript,bzsolt/jerryscript,robertsipka/jerryscript,robertsipka/jerryscript,robertsipka/jerryscript,akosthekiss/jerryscript,jerryscript-project/jerryscript,robertsipka/jerryscript,zherczeg/jerryscript