Fix @NonNull annotation errors

Change-Id: Ide9dffbd1a0a416e832853b6d29737590e5c292c
Signed-off-by: Patrick Tasse <patrick.tasse@gmail.com>
Reviewed-on: https://git.eclipse.org/r/95415
Reviewed-by: Hudson CI
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
diff --git a/statesystem/org.eclipse.tracecompass.segmentstore.core/src/org/eclipse/tracecompass/internal/segmentstore/core/segmentHistoryTree/HistoryTreeSegmentStore.java b/statesystem/org.eclipse.tracecompass.segmentstore.core/src/org/eclipse/tracecompass/internal/segmentstore/core/segmentHistoryTree/HistoryTreeSegmentStore.java
index 65e5916..ead88be 100644
--- a/statesystem/org.eclipse.tracecompass.segmentstore.core/src/org/eclipse/tracecompass/internal/segmentstore/core/segmentHistoryTree/HistoryTreeSegmentStore.java
+++ b/statesystem/org.eclipse.tracecompass.segmentstore.core/src/org/eclipse/tracecompass/internal/segmentstore/core/segmentHistoryTree/HistoryTreeSegmentStore.java
@@ -15,6 +15,7 @@
 import java.util.Collection;
 import java.util.Comparator;
 import java.util.Iterator;
+import java.util.Objects;
 
 import org.eclipse.jdt.annotation.NonNull;
 import org.eclipse.jdt.annotation.Nullable;
@@ -252,7 +253,7 @@
         while (iterator.hasNext() && unFound > 0) {
             E seg = iterator.next();
             for (Object o : c) {
-                if (o.equals(seg)) {
+                if (Objects.equals(o, seg)) {
                     unFound--;
                 }
             }
diff --git a/tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/analysis/TmfAbstractAnalysisModule.java b/tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/analysis/TmfAbstractAnalysisModule.java
index 9f4e00c..b2e854d 100644
--- a/tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/analysis/TmfAbstractAnalysisModule.java
+++ b/tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/analysis/TmfAbstractAnalysisModule.java
@@ -592,7 +592,7 @@
     }
 
     @Override
-    public Iterable<@NonNull TmfAbstractAnalysisRequirement> getAnalysisRequirements() {
+    public Iterable<TmfAbstractAnalysisRequirement> getAnalysisRequirements() {
         return Collections.EMPTY_SET;
     }