[PWGLF] set default before bit computation (#14547)

Author: maciacco

PWGLF/TableProducer/Nuspex/ebyeMaker.cxx

@@ -98,14 +98,16 @@ void encode16bit(int const& n, uint8_t& low, uint8_t& up)
   if (n >= (1 << 16)) {
     low = up = -1;
     return;
+  } else {
+    low = up = 0;
   }
-  int bbyte = 8;
-  for (int b{0}; b < bbyte; ++b) {
-    int bl = (n & (1 << b)) >> b;
-    int bu = (n & (1 << (b + bbyte))) >> (b + bbyte);
-    if (bl > 0)
+  int bByte = 8;
+  for (int b{0}; b < bByte; ++b) {
+    int bL = (n & (1 << b)) >> b;
+    int bU = (n & (1 << (b + bByte))) >> (b + bByte);
+    if (bL > 0)
       low += (1 << b);
-    if (bu > 0)
+    if (bU > 0)
       up += (1 << b);
   }
 }