Fix uninitialized variables:

Fix uninitialized variables:

fs3_ops.cpp: In member function 'bool Fs3Operations::Fs3GetNewSectionAddr(Fs3Operations::toc_info*, u_int32_t&, bool)':
fs3_ops.cpp:1727:40: error: 'toc' may be used uninitialized in this function [-Werror=maybe-uninitialized]
         devInfoAddr1 = (toc->toc_entry.flash_addr << 2) - 0x1000;
                                        ^
fs3_ops.cpp: In member function 'bool Fs3Operations::Fs3UpdateSection(void*, fs3_section_t, bool, CommandType, PrintCallBack)':
fs3_ops.cpp:1863:27: error: 'curr_toc' may be used uninitialized in this function [-Werror=maybe-uninitialized]
     if (!Fs3UpdateItocInfo(curr_toc, newSectionAddr, curr_toc->toc_entry.size, newUidSection)) {
                           ^
fs3_ops.cpp: In member function 'bool Fs3Operations::Fs3Burn(Fs3Operations&, FwOperations::ExtBurnParams&)':
fs3_ops.cpp:1068:65: error: 'imageInfoToc' may be used uninitialized in this function [-Werror=maybe-uninitialized]
             std::vector<u_int8_t> imageInfoSect = imageInfoToc->section_data;

Signed-off-by: Ana Guerrero López <ana@ekaia.org>
Signed-off-by: Adrian Chiris <adrianc@mellanox.com>