fix source file

src/mod/endpoints/mod_opal/Makefile.am

@@ -5,7 +5,7 @@ PKG_DIR=/usr/local/lib/pkgconfig
 
 #DEBUG_SUFFIX:=--define-variable=suffix=_d
 mod_LTLIBRARIES = mod_opal.la
-mod_opal_la_SOURCES  = mod_opal.c
+mod_opal_la_SOURCES  = mod_opal.cpp
 mod_opal_la_CFLAGS   = $(AM_CFLAGS) `PKG_CONFIG_PATH=$(PKG_CONFIG_PATH):$(PKG_DIR) pkg-config opal $(DEBUG_SUFFIX) --cflags`
 mod_opal_la_LIBADD   = $(switch_builddir)/libfreeswitch.la
 mod_opal_la_LDFLAGS  = -avoid-version -module -no-undefined -shared `pkg-config opal $(DEBUG_SUFFIX) --libs`