fix curl for macos closes #7698 #7656 (#7699)

Author: ofTheo

libs/openFrameworksCompiled/project/osx/CoreOF.xcconfig

@@ -21,7 +21,7 @@ HEADER_BOOST = "$(OF_PATH)/libs/boost/include"
 HEADER_UTF8 = "$(OF_PATH)/libs/utf8/include"
 HEADER_JSON = "$(OF_PATH)/libs/json/include"
 HEADER_GLM = "$(OF_PATH)/libs/glm/include"
-HEADER_CURL = "$(OF_PATH)/libs/curl/include"
+HEADER_CURL = ""
 HEADER_URIPARSER = "$(OF_PATH)/libs/uriparser/include"
 HEADER_PUGIXML = "$(OF_PATH)/libs/pugixml/include"
 
@@ -37,7 +37,7 @@ LIB_CAIRO2 = "$(OF_PATH)/libs/cairo/lib/osx/cairo.a"
 LIB_CAIRO3 = "$(OF_PATH)/libs/cairo/lib/osx/pixman-1.a"
 LIB_BOOST_SYSTEM = "$(OF_PATH)/libs/boost/lib/osx/boost_system.a"
 LIB_BOOST_FS = "$(OF_PATH)/libs/boost/lib/osx/boost_filesystem.a"
-LIB_CURL = "$(OF_PATH)/libs/curl/lib/osx/curl.a"
+LIB_CURL = "-lcurl"
 LIB_URIPARSER = "$(OF_PATH)/libs/uriparser/lib/osx/uriparser.a"
 LIB_PUGIXML = "$(OF_PATH)/libs/pugixml/lib/osx/pugixml.a"