fixed checking of downloaded php source archive

Author: francisek

lib/core.sh

@@ -140,7 +140,8 @@ php_band_check_for_source() {
         log_info "Attempting to download from $host"
         $WGET_BIN -P "$PHP_BAND_ARCH_DIR" -O "$srcfile" "$host"
         if [ -f "$srcfile" ]; then
-          if $TAR_BIN -tf "$srcfile" ; then
+          $TAR_BIN -tf "$srcfile" 2>&1 > /dev/null
+          if [ $? -ne 0 ]; then
             rm "$srcfile"
           fi
         fi