Merge pull request duckdb#11 from lnkuiper/last_modified

Try to parse `"Last-Modified"` field, ignore if fails

Author: carlopi

extension/httpfs/httpfs.cpp

@@ -772,16 +772,18 @@ void HTTPFileHandle::Initialize(optional_ptr<FileOpener> opener) {
 		FullDownload(hfs, should_write_cache);
 	}
 	if (!res->headers["Last-Modified"].empty()) {
-		auto result = StrpTimeFormat::Parse("%a, %d %h %Y %T %Z", res->headers["Last-Modified"]);
-		struct tm tm {};
-		tm.tm_year = result.data[0] - 1900;
-		tm.tm_mon = result.data[1] - 1;
-		tm.tm_mday = result.data[2];
-		tm.tm_hour = result.data[3];
-		tm.tm_min = result.data[4];
-		tm.tm_sec = result.data[5];
-		tm.tm_isdst = 0;
-		last_modified = mktime(&tm);
+		StrpTimeFormat::ParseResult result;
+		if (StrpTimeFormat::TryParse("%a, %d %h %Y %T %Z", res->headers["Last-Modified"], result)) {
+			struct tm tm {};
+			tm.tm_year = result.data[0] - 1900;
+			tm.tm_mon = result.data[1] - 1;
+			tm.tm_mday = result.data[2];
+			tm.tm_hour = result.data[3];
+			tm.tm_min = result.data[4];
+			tm.tm_sec = result.data[5];
+			tm.tm_isdst = 0;
+			last_modified = mktime(&tm);
+		}
 	}
 
 	if (should_write_cache) {