[REFACTOR] sonarcloud fixes.

Author: Gonzalo Diaz

algorithm-exercises-java/src/main/java/ae/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/RansomNote.java

@@ -46,7 +46,7 @@ public static boolean checkMagazineCompute(List<String> magazine, List<String> n
         if (dictionary.get(word) < 0) {
           throw new RansomNote().new InvalidValueException("Value can't go below 0");
         }
-      } catch (Exception e) {
+      } catch (Exception _) {
         return false;
       }
     }

algorithm-exercises-java/src/main/java/ae/projecteuler/Problem0023.java

@@ -68,9 +68,9 @@ public static Integer problem0023(int underLimit, int superLimit) {
     );
     Log.debug(log);
 
-    ////////////////////
+    // /////////////////
     // filter duplicates
-    ////////////////////
+    // /////////////////
 
     // Create a new LinkedHashSet
     Set<Integer> set = new LinkedHashSet<>();