Allow harmless 'Content-Type' headers on requests

GCDWebServer/Core/GCDWebServerRequest.m

@@ -186,6 +186,7 @@ NSString* const GCDWebServerRequestAttribute_RegexCaptures = @"GCDWebServerReque
     if (lengthHeader) {
       NSInteger length = [lengthHeader integerValue];
       if (_chunked || (length < 0)) {
+        GWS_LOG_WARNING(@"Invalid 'Content-Length' header '%@' for '%@' request on \"%@\"", lengthHeader, _method, _url);
         GWS_DNOT_REACHED();
         return nil;
       }
@@ -200,8 +201,8 @@ NSString* const GCDWebServerRequestAttribute_RegexCaptures = @"GCDWebServerReque
       _length = NSUIntegerMax;
     } else {
       if (_type) {
-        GWS_DNOT_REACHED();
-        return nil;
+        GWS_LOG_WARNING(@"Ignoring 'Content-Type' header for '%@' request on \"%@\"", _method, _url);
+        _type = nil;  // Content-Type without Content-Length or chunked-encoding doesn't make sense
       }
       _length = NSUIntegerMax;
     }