Replace --with-gd by --enable-gd for Travis

Fabien Villepinte · petk · commit 972a65c882b0 · 2019-03-04T14:48:09.000+01:00
diff --git a/travis/compile.sh b/travis/compile.sh
@@ -40,7 +40,7 @@ $TS \
 --with-pdo-sqlite \
 --enable-intl \
 --without-pear \
---with-gd \
+--enable-gd \
 --with-jpeg \
 --with-webp \
 --with-freetype \
