Fix typo

Signed-off-by: falkTX <falktx@falktx.com>

bootstrap-common.sh

@@ -403,7 +403,7 @@ fi
 # ---------------------------------------------------------------------------------------------------------------------
 # libsamplerate
 
-if [ -z "${PAWPAW_SKIP_SAMPLERATE}" ] && [ "${PAWPAW_SKIP_SAMPLERATE}" -eq 1 ]; then
+if [ -n "${PAWPAW_SKIP_SAMPLERATE}" ] && [ "${PAWPAW_SKIP_SAMPLERATE}" -eq 1 ]; then
 
 LIBSAMPLERATE_EXTRAFLAGS="--disable-fftw"