The string to integer and string to float standalone fuzz targets just
ran the functions and didn't do anything with the output. This was
intentional, since they are intended to be used with sanitizers to
detect buffer overflow bugs. Not using the variables was causing compile
warnings, so this patch adds trivial checks to use the variables.
Reviewed By: sivachandra, lntue
Differential Revision: https://reviews.llvm.org/D144208
Fuzzing the string to integer and float functions without relying on the
system libc allows for tests to be run in a wider variety of places.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D143616