Apply minor corrections resulting from compiling the project using the
"-Wall -Weffc++ -pedantic -Wextra -Waggregate-return -Wcast-align
-Wcast-qual -Wconversion -Wdisabled-optimization -Wfloat-equal
-Wformat=2 -Wformat-nonliteral -Wformat-security -Wformat-y2k -Wimport
-Winit-self -Winline -Winvalid-pch -Wlong-long
-Wmissing-field-initializers -Wmissing-format-attribute
-Wmissing-include-dirs -Wmissing-noreturn -Wpacked  -Wpadded
-Wpointer-arith -Wredundant-decls -Wshadow -Wstack-protector
-Wstrict-aliasing=2 -Wswitch-default -Wswitch-enum -Wunreachable-code
-Wunused -Wunused-parameter -Wvariadic-macros -Wwrite-strings" flags.