Fixed an issue with "+" in the filename

ngx_http_zip_parsers.c

@@ -49,12 +49,12 @@ destructive_url_decode_len(unsigned char* start, unsigned char* end)
 
     for (; read_pos < end; read_pos++) {
 	unsigned char ch = *read_pos;
+	if (ch == '+')
+	    ch = ' ';
 	if (ch == '%' && (read_pos+2 < end)) {
 	    ch = 16 * hex_char_value(*(read_pos+1)) + hex_char_value(*(read_pos+2));
 	    read_pos += 2;
 	    }
-	if (ch == '+')
-	    ch = ' ';
 	*(write_pos++) = ch;
     }
 

t/nginx/html/file1 with space + plus.txt

@@ -0,0 +1 @@
+This is the first file.

t/nginx/html/zip-spaces-plus.txt

@@ -0,0 +1,2 @@
+1a6349c5 24 /file1%20with%20space%20%2B%20plus.txt file1.txt
+5d70c4d3 25 /file2.txt file2.txt

t/ziptest.pl

@@ -2,7 +2,7 @@
 
 # TODO tests for Zip64
 
-use Test::More tests => 84;
+use Test::More tests => 88;
 use LWP::UserAgent;
 use Archive::Zip;
 
@@ -137,6 +137,13 @@ ($$)
 $zip = test_zip_archive($response->content, "with spaces in URLs");
 is($zip->numberOfMembers(), 2, "Correct number in spaced-out ZIP");
 
+$response = $ua->get("$http_root/zip-spaces-plus.txt");
+is($response->code, 200, "Returns OK with spaces and plus in URLs");
+
+$zip = test_zip_archive($response->content, "with spaces and plus in the URLs");
+is($zip->numberOfMembers(), 2, "Correct number in spaces and plus ZIP");
+
+
 open LARGEFILE, ">", "nginx/html/largefile.txt";
 for (0..99999) {
     print LARGEFILE "X" x 99;