Prefer more specific functions to DtoResolveDsymbol.

The remaining ones should also be easy to remove with a
closer look at the situation.

Ideally, we would get rid of all of them at some point and
use safe wrapper functions for accessing the IrDsymbol
associated with a given declaration (which would emit the
declarations on the fly if not already present).

gen/rttibuilder.cpp

@@ -11,6 +11,7 @@
 #include "aggregate.h"
 #include "mtype.h"
 #include "gen/arrays.h"
+#include "gen/functions.h"
 #include "gen/irstate.h"
 #include "gen/linkage.h"
 #include "gen/llvm.h"
@@ -135,7 +136,7 @@ void RTTIBuilder::push_funcptr(FuncDeclaration* fd, Type* castto)
 {
     if (fd)
     {
-        DtoResolveDsymbol(fd);
+        DtoResolveFunction(fd);
         LLConstant* F = fd->ir.irFunc->func;
         if (castto)
             F = DtoBitCast(F, DtoType(castto));