Shut up a few silly compiler warnings that have crept in

- missing cast in python header subscript
- (false) warning about uninitialized variable, unused variable in rpmfc
- missing include in rpmio

build/rpmfc.c

@@ -302,7 +302,7 @@ static char * rpmfcFileDep(int ix, rpmds ds)
 {
     rpmTag tagN = rpmdsTagN(ds);
     char *buf = NULL;
-    char deptype;
+    char deptype = '?';
 
     if (ds == NULL) {
 	return xstrdup("");
@@ -820,7 +820,6 @@ static int rpmfcELF(rpmfc fc)
     rpmds * depsp, ds;
     rpmTag tagN;
     int32_t dsContext;
-    char * t;
     int xx;
     int isElf64;
     int isDSO;

python/header-py.c

@@ -570,7 +570,7 @@ static PyObject * hdr_getattro(PyObject * o, PyObject * n)
     PyObject * res;
     res = PyObject_GenericGetAttr(o, n);
     if (res == NULL)
-	res = hdr_subscript(o, n);
+	res = hdr_subscript((hdrObject *)o, n);
     return res;
 }
 

rpmio/rpmio.c

@@ -25,6 +25,7 @@ extern int h_errno;
 #include <rpm/rpmlog.h>
 #include <rpm/rpmmacro.h>
 #include <rpm/rpmfileutil.h>
+#include <rpm/rpmstring.h>
 
 #include "rpmio/rpmio_internal.h"
 #include "rpmio/ugid.h"