Suppress cppcheck's memset-on-floats warnings

[gunterkoenigsmann]

CppCheck, if all warnings are enabled, complains if one calls memset on something that contains a float variable.
In our case setting the variable to 0 is what we actually intent which means we can tell cppcheck to mute these warnings.

[v0lt]

I think writing weird comments is a bad idea.
I can suggest replacing calls to malloc and memset with a single call to calloc.

It was:

p = (NSVGparser*)malloc(sizeof(NSVGparser));
if (p == NULL) goto error;
memset(p, 0, sizeof(NSVGparser));

It became:

p = (NSVGparser*)calloc(1, sizeof(NSVGparser));
if (p == NULL) goto error;

[v0lt]

I also think it's bad form to create a lot of pull requests based on cosmetic statistical analyzer warnings.