FS-7488: [mod_managed] fix build error

src/include/switch_utils.h

@@ -43,7 +43,7 @@
 
 SWITCH_BEGIN_EXTERN_C 
 
-#define SWITCH_URL_UNSAFE "\r\n \"#%&+:;<=>?@[\\]^`{|}"
+#define SWITCH_URL_UNSAFE "\r\n #%&+:;<=>?@[\\]^`{|}\""
 
 
 /* https://code.google.com/p/stringencoders/wiki/PerformanceAscii 

src/mod/languages/mod_managed/freeswitch_wrap.cxx

@@ -17201,9 +17201,7 @@ SWIGEXPORT char * SWIGSTDCALL CSharp_SWITCH_URL_UNSAFE_get() {
   char * jresult ;
   char *result = 0 ;
   
-  result = (char *)("\r\n \"#%&+:;<=>?@[\\]^`{
-    |
-}");
+result = (char *)("\r\n #%&+:;<=>?@[\\]^`{|}\"");
  jresult = SWIG_csharp_string_callback((const char *)result); 
     return jresult;
 }

src/mod/languages/mod_managed/mod_managed.cpp

@@ -100,7 +100,7 @@ SWITCH_MOD_DECLARE_NONSTD(void) InitManagedSession(ManagedSession *session, inpu
 	if (!session) {
 		return;
 	}
-	session->setDTMFCallback(NULL, "");
+	session->setDTMFCallback(NULL, (char *)"");
 	session->setHangupHook(NULL);
 	session->dtmfDelegate = dtmfDelegate;
 	session->hangupDelegate = hangupDelegate;