[MR1] MMS: Fix Verizon IOT 2.6.1 fail [patch3]
[MR1] MMS: Fix Verizon IOT 2.6.1 fail [patch3]

patch3: change local variable name for understanding

Add exception handling when MMSC send 404: file not found
for retrieving mms. Show error message and do not retry to
retrieve.
This is Verizon MMS IOT test case. They remove MMS from MMSC
before try to retrieve MMS.

Bug: 5245918

Change-Id: I2546db94b2ce2e2cdd7f1667a30b82e926d1b132
Signed-off-by:  <e565acdbf31ff350a2c86c30e563e61c4a0e8d41@samsung.com>

bmaupin/android-sms-plus