Messaging: Language cleanup

No unnecessary boxing, enhanced for loops, redundant checks and throws,
imports (removal, reordering), possible void returns

Change-Id: I7a8e1b2007e3b0906e01b41785c518d02c2f3fab

src/com/android/messaging/mmslib/pdu/PduComposer.java

@@ -522,8 +522,8 @@ public class PduComposer {
                 }
 
                 EncodedStringValue temp;
-                for (int i = 0; i < addr.length; i++) {
-                    temp = appendAddressType(addr[i]);
+                for (EncodedStringValue encodedStringValue : addr) {
+                    temp = appendAddressType(encodedStringValue);
                     if (temp == null) {
                         return PDU_COMPOSE_CONTENT_ERROR;
                     }