simplify logic, reduce event access

Author: baltzell

reconstruction/dc/src/main/java/org/jlab/rec/dc/banks/HitReader.java

@@ -388,22 +388,17 @@ private void read_HBHits(TimeToDistanceEstimator tde) {
                 continue;
             }
 
-            double T_0 = 0;
-            double T_Start = 0;
-            
             if (!event.hasBank(recBankName)) {
                 continue;
             }
 
-            if (event.hasBank(recBankName) && 
-                    event.getBank(recBankName).getFloat("startTime", 0)==-1000) {
+            double T_Start = event.getBank(recBankName).getFloat("startTime", 0);
+
+            if (T_Start == -1000) {
                 continue;
             } 
 
-            if (event.hasBank(recBankName))
-                    T_Start = event.getBank(recBankName).getFloat("startTime", 0);
-            
-            T_0 = this.getT0(sector[i], slayer[i], layer[i], wire[i], t0s)[0];
+            double T_0 = this.getT0(sector[i], slayer[i], layer[i], wire[i], t0s)[0];
             FittedHit hit = new FittedHit(sector[i], slayer[i], layer[i], wire[i], tdc[i], jitter[i], id[i]);
             hit.set_Id(id[i]);
             hit.setB(B[i]);