Update coverity comments

Author: kmurray

libvtrutil/src/vtr_matrix.cpp

@@ -18,7 +18,7 @@ void free_ivec_vector(t_ivec *ivec_vector, int nrmin, int nrmax) {
 		if (ivec_vector[i].nelem != 0)
 			free(ivec_vector[i].list);
 
-    //coverity[offset_free]
+    // coverity[offset_free]
 	free(ivec_vector + nrmin);
 }
 

vpr/SRC/route/build_switchblocks.cpp

@@ -910,7 +910,7 @@ static void compute_wireconn_connections(int nx, int ny, e_directionality direct
                 //Since we are implementing the reverse connection we have swapped from and to.
                 //
                 //Coverity flags this (false positive), so annotatate so coverity ignores it:
-                //coverity[swapped_arguments]
+                // coverity[swapped_arguments]
                 Switchblock_Lookup sb_conn_reverse(sb_conn.x_coord, sb_conn.y_coord, sb_conn.to_side, sb_conn.from_side);
                 (*sb_conns)[sb_conn_reverse].push_back(sb_reverse_edge);
             }

vpr/SRC/route/route_common.cpp

@@ -810,7 +810,7 @@ void free_route_structs() {
     auto& route_ctx = g_vpr_ctx.mutable_routing();
 
 	if(heap != NULL) {
-        //coverity[offset_free]
+        // coverity[offset_free]
 		free(heap + 1);
 	}
 	if(route_ctx.route_bb != NULL) {

vpr/SRC/route/route_timing.cpp

@@ -472,11 +472,11 @@ void free_timing_driven_route_structs(float *pin_criticality, int *sink_order,
 
 	/* Frees all the stuctures needed only by the timing-driven router.        */
 
-    //coverity[offset_free]
+    // coverity[offset_free]
 	free(pin_criticality + 1); /* Starts at index 1. */
-    //coverity[offset_free]
+    // coverity[offset_free]
 	free(sink_order + 1);
-    //coverity[offset_free]
+    // coverity[offset_free]
 	free(rt_node_of_sink + 1);
 	free_route_tree_timing_structs();
 }