Add in-class initializers for t_placer_costs to fix coverity scan defect

[Bill-hbrhbr]

Description

Fix Coverity Scan for t_placer_costs in place_util.h.

Original report:
Please find the latest report on new defect(s) introduced to Verilog to Routing found with Coverity Scan.

1 new defect(s) introduced to Verilog to Routing found with Coverity Scan.
1 defect(s), reported by Coverity Scan earlier, were marked fixed in the recent build analyzed by Coverity Scan.

New defect(s) Reported-by: Coverity Scan
Showing 1 of 1 defect(s)

** CID 214341: Uninitialized members (UNINIT_CTOR)
/home/travis/build/verilog-to-routing/vtr-verilog-to-routing/vpr/src/place/place_util.h: 51 in t_placer_costs::t_placer_costs(t_place_algorithm)()

---

*** CID 214341: Uninitialized members (UNINIT_CTOR)
/home/travis/build/verilog-to-routing/vtr-verilog-to-routing/vpr/src/place/place_util.h: 51 in t_placer_costs::t_placer_costs(t_place_algorithm)()
45 double timing_cost;
46 double bb_cost_norm;
47 double timing_cost_norm;
48
49 public: //Constructor
50 t_placer_costs(t_place_algorithm algo)

CID 214341:  Uninitialized members  (UNINIT_CTOR)
Non-static class member "timing_cost_norm" is not initialized in this constructor nor in any functions that it calls.

51 : place_algorithm(algo) {}
52
53 public: //Mutator
54 void update_norm_factors();
55
56 private:

Types of changes

• Bug fix (change which fixes an issue)
• New feature (change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

[vaughnbetz]

Looks good Bill, thanks. Will merge when CI goes green.