Reducing duplicated code in pitch_ol_fx.c

Basic info

• Float reference:
  • Encoder (float):
  • Decoder (float):
• Fixed point:
  • Encoder (fixed): cf7f073c
  • Decoder (fixed):

Bug description

IVAS pitch ol is using 64 bits for correlation computation, but the processing to select the final pitch is the same between IVAS and EVS, saving around 300 Ln

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-xxxx