Some more lgtm.com fixes/work-arounds

Author: cowtowncoder

avro/src/main/java/com/fasterxml/jackson/dataformat/avro/deser/JacksonAvroParserImpl.java

@@ -1099,6 +1099,7 @@ protected final void _loadToHaveAtLeast(int minAvailable) throws IOException
         // No input stream, no leading (either we are closed, or have non-stream input source)
         if (_inputStream == null) {
             _reportError("Needed to read %d bytes, reached end-of-input", minAvailable);
+            return; // never gets here, but sec tools complain without
         }
         while (_inputEnd < minAvailable) {
             int count = _inputStream.read(_inputBuffer, _inputEnd, _inputBuffer.length - _inputEnd);

avro/src/main/java/com/fasterxml/jackson/dataformat/avro/schema/AvroSchemaHelper.java

@@ -151,11 +151,13 @@ public static Schema simpleSchema(JsonFormatTypes type, JavaType hint)
             return Schema.create(Schema.Type.NULL);
         case NUMBER:
             // 16-Feb-2017, tatu: Fixed as suggested by `baharclerode@github`
-            if (hint.hasRawClass(float.class)) {
-                return Schema.create(Schema.Type.FLOAT);
-            }
-            if (hint.hasRawClass(long.class)) {
-                return Schema.create(Schema.Type.LONG);
+            if (hint != null) {
+                if (hint.hasRawClass(float.class)) {
+                    return Schema.create(Schema.Type.FLOAT);
+                }
+                if (hint.hasRawClass(long.class)) {
+                    return Schema.create(Schema.Type.LONG);
+                }
             }
             return Schema.create(Schema.Type.DOUBLE);
         case STRING:

protobuf/src/main/java/com/fasterxml/jackson/dataformat/protobuf/ProtobufGenerator.java

@@ -394,6 +394,7 @@ public final void writeStartArray() throws IOException
         }
         if (_currField == null) { // just a sanity check
             _reportError("Can not write START_ARRAY without field (message type "+_currMessage.getName()+")");
+            return; // never gets here but code analyzers can't see that
         }
         if (!_currField.isArray()) {
             _reportError("Can not write START_ARRAY: field '"+_currField.name+"' not declared as 'repeated'");
@@ -568,6 +569,7 @@ private void _verifyArrayWrite(Object array) throws IOException
         }
         if (_currField == null) { // inlined _verifyValueWrite
             _reportError("Can not write START_ARRAY without field (message type "+_currMessage.getName()+")");
+            return; // never gets here but need to help code analyzers
         }
         if (!_currField.isArray()) {
             _reportError("Can not write START_ARRAY: field '"+_currField.name+"' not declared as 'repeated'");

protobuf/src/main/java/com/fasterxml/jackson/dataformat/protobuf/ProtobufParser.java

@@ -545,6 +545,7 @@ public JsonToken nextToken() throws IOException
         case STATE_INITIAL:
             if (_schema == null) {
                 _reportError("No Schema has been assigned: can not decode content");
+                return null; // never gets here but needed for code analyzers benefit
             }
             _currentMessage = _schema.getRootType();
             _currentField = _currentMessage.firstField();