libmicrohttpd: fix pkgconfig file location
libmicrohttpd: fix pkgconfig file location

moochris/haikuports,nielx/haikuports,Begasus/haikuports,moochris/haikuports,Begasus/haikuports,haikuports/haikuports,miqlas/haikuports,haikuports/haikuports,Begasus/haikuports,koletzky/haikuports,miqlas/haikuports,miqlas/haikuports,nielx/haikuports,Begasus/haikuports,moochris/haikuports,nielx/haikuports,haikuports/haikuports,haikuports/haikuports,haikuports/haikuports,koletzky/haikuports,Begasus/haikuports,koletzky/haikuports