squash some -Wsign-compare warnings

diff --git a/lib/expr/exgram.h b/lib/expr/exgram.h
index 5d346c9c4c424d8d88fa815f29cac66521e0785b..9e57173bef160b3d10e0f9c35b0db1c2da0a787a 100644 (file)
--- a/lib/expr/exgram.h
+++ b/lib/expr/exgram.h
@@ -31,6 +31,7 @@ extern "C" {
 #endif
 
 #include "exlib.h"
+#include <stddef.h>
 #include <string.h>
 
 #define exlex()                extoken_fn(expr.program)
@@ -83,7 +84,6 @@ exfreenode(Expr_t* p, Exnode_t* x)
        Exref_t*        r;
        Print_t*                pn;
        Exref_t*                rn;
-       int                     i;
 
        switch (x->op)
        {
@@ -164,6 +164,7 @@ exfreenode(Expr_t* p, Exnode_t* x)
                pn = x->data.print.args;
                while ((pr = pn))
                {
+                       size_t i;
                        for (i = 0; i < elementsof(pr->param) && pr->param[i]; i++)
                                exfreenode(p, pr->param[i]);
                        if (pr->arg)
@@ -1044,13 +1045,13 @@ excomp(Expr_t* p, const char* name, int line, const char* sp, Sfio_t* fp)
 void
 exclose(Expr_t* p, int all)
 {
-       int             i;
        Exinput_t*      in;
 
        if (p)
        {
                if (all)
                {
+                       size_t i;
                        for (i = 3; i < elementsof(p->file); i++)
                                if (p->file[i])
                                        sfclose(p->file[i]);