Get rid of empty if-statements

Change-Id: Ie1a6a8e60bcb7affd4c8fe7432d6bb93ca499637

gerrit-pgm/src/main/java/com/google/gerrit/pgm/Daemon.java

@@ -196,8 +196,7 @@ public class Daemon extends SiteProgram {
     }
 
     manager.add(GarbageCollectionLogFile.start(getSitePath()));
-    if (consoleLog) {
-    } else {
+    if (!consoleLog) {
       manager.add(ErrorLogFile.start(getSitePath()));
     }
 

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/api/Section.java

@@ -68,10 +68,9 @@ public class Section {
         flags.cfg.setStringList(section, subsection, name, all);
       }
 
-    } else if (all.size() == 0) {
     } else if (all.size() == 1) {
       flags.cfg.unset(section, subsection, name);
-    } else {
+    } else if (all.size() != 0) {
       all.remove(0);
       flags.cfg.setStringList(section, subsection, name, all);
     }

gerrit-server/src/main/java/com/google/gerrit/server/git/ReceiveCommitsAdvertiseRefsHook.java

@@ -154,9 +154,10 @@ public class ReceiveCommitsAdvertiseRefsHook implements AdvertiseRefsHook {
     RevCommit c;
     try {
       while ((c = rw.next()) != null && toInclude.size() < max) {
-        if (alreadySending.contains(c)) {
-        } else if (toInclude.contains(c)) {
-        } else if (c.getParentCount() > 1) {
+        if (alreadySending.contains(c)
+            || toInclude.contains(c)
+            || c.getParentCount() > 1) {
+          // Do nothing
         } else if (toInclude.size() < base) {
           toInclude.add(c);
         } else {

gerrit-server/src/main/java/com/google/gerrit/server/patch/PatchScriptBuilder.java

@@ -177,7 +177,7 @@ class PatchScriptBuilder {
 
     boolean hugeFile = false;
     if (a.mode == FileMode.GITLINK || b.mode == FileMode.GITLINK) {
-
+      // Do nothing
     } else if (a.src == b.src && a.size() <= context
         && content.getEdits().isEmpty()) {
       // Odd special case; the files are identical (100% rename or copy)

gerrit-sshd/src/main/java/com/google/gerrit/sshd/BaseCommand.java

@@ -338,8 +338,7 @@ public abstract class BaseCommand implements Command {
       return 127;
     }
 
-    if (e instanceof UnloggedFailure) {
-    } else {
+    if (!(e instanceof UnloggedFailure)) {
       final StringBuilder m = new StringBuilder();
       m.append("Internal server error");
       if (userProvider.get().isIdentifiedUser()) {