Fix some code warnings

Author: aleksandr-m

src/main/java/com/amashchenko/maven/plugin/gitflow/AbstractGitFlowMojo.java

@@ -951,16 +951,10 @@ protected void gitFetchRemoteAndCompare(final String branchName)
                     "--left-right", "--count", branchName + "..."
                             + gitFlowConfig.getOrigin() + "/" + branchName);
 
-            String[] counts = org.apache.commons.lang3.StringUtils.split(
-                    revlistout, '\t');
-            if (counts != null && counts.length > 1) {
-                if (!"0".equals(org.apache.commons.lang3.StringUtils
-                        .deleteWhitespace(counts[1]))) {
-                    throw new MojoFailureException("Remote branch '"
-                            + gitFlowConfig.getOrigin() + "/" + branchName
-                            + "' is ahead of the local branch '" + branchName
-                            + "'. Execute git pull.");
-                }
+            String[] counts = org.apache.commons.lang3.StringUtils.split(revlistout, '\t');
+            if (counts != null && counts.length > 1 && !"0".equals(org.apache.commons.lang3.StringUtils.deleteWhitespace(counts[1]))) {
+                throw new MojoFailureException("Remote branch '" + gitFlowConfig.getOrigin() + "/" + branchName
+                        + "' is ahead of the local branch '" + branchName + "'. Execute git pull.");
             }
         }
     }

src/main/java/com/amashchenko/maven/plugin/gitflow/GitFlowFeatureStartMojo.java

@@ -155,9 +155,7 @@ public void execute() throws MojoExecutionException, MojoFailureException {
                 gitPush(gitFlowConfig.getFeatureBranchPrefix()
                         + featureBranchName, false);
             }
-        } catch (CommandLineException e) {
-            throw new MojoFailureException("feature-start", e);
-        } catch (VersionParseException e) {
+        } catch (CommandLineException | VersionParseException e) {
             throw new MojoFailureException("feature-start", e);
         }
     }

src/main/java/com/amashchenko/maven/plugin/gitflow/GitFlowHotfixStartMojo.java

@@ -257,9 +257,7 @@ public void execute() throws MojoExecutionException, MojoFailureException {
             if (pushRemote) {
                 gitPush(hotfixBranchName, false);
             }
-        } catch (CommandLineException e) {
-            throw new MojoFailureException("hotfix-start", e);
-        } catch (VersionParseException e) {
+        } catch (CommandLineException | VersionParseException e) {
             throw new MojoFailureException("hotfix-start", e);
         }
     }

src/main/java/com/amashchenko/maven/plugin/gitflow/GitFlowReleaseStartMojo.java

@@ -254,9 +254,7 @@ public void execute() throws MojoExecutionException, MojoFailureException {
 
                 gitPush(fullBranchName, false);
             }
-        } catch (CommandLineException e) {
-            throw new MojoFailureException("release-start", e);
-        } catch (VersionParseException e) {
+        } catch (CommandLineException | VersionParseException e) {
             throw new MojoFailureException("release-start", e);
         }
     }

src/main/java/com/amashchenko/maven/plugin/gitflow/GitFlowVersionInfo.java

@@ -97,7 +97,7 @@ private String nextVersion(final Integer index, boolean snapshot) {
         if (digits != null) {
             if (index != null && index >= 0 && index < digits.size()) {
                 int origDigitsLength = joinDigitString(digits).length();
-                digits.set(index, incrementVersionString((String) digits.get(index)));
+                digits.set(index, incrementVersionString(digits.get(index)));
                 for (int i = index + 1; i < digits.size(); i++) {
                     digits.set(i, "0");
                 }