Added drfront_fetch_symbols routine return value checking in drmemory.
Added drfront_fetch_symbols routine return value checking in drmemory.

Added drfront_fetch_symbols routine return value checking in drmemory.

R=bruening@google.com
BUG=None

Review URL: https://codereview.appspot.com/127180043

SVN-Revision: 2017

code4bones/drmemory,code4bones/drmemory,LohithBlaze/drmemory,code4bones/drmemory,LohithBlaze/drmemory,LohithBlaze/drmemory,sigma-random/drmemory,LohithBlaze/drmemory,LohithBlaze/drmemory,sigma-random/drmemory,code4bones/drmemory,sigma-random/drmemory,code4bones/drmemory,sigma-random/drmemory,sigma-random/drmemory