Replace memory leaking instances of realloc with non-leaking reallocf.

In some cases replace if (a == null) a = malloc(x); else a =
realloc(a, x); with simple reallocf(a, x).  Per ANSI-C, this is
guaranteed to be the same thing.

I've been running these on my system here w/o ill effects for some
time.  However, the CTM-express is at part 6 of 34 for the CAM
changes, so I've not been able to do a build world with the CAM in the
tree with these changes.  Shouldn't impact anything, but...

3 files changed, 6 insertions, 7 deletions

diff --git a/lib/libc/db/btree/bt_overflow.c b/lib/libc/db/btree/bt_overflow.c
index b28b8e0..db28a22 100644
--- a/lib/libc/db/btree/bt_overflow.c
+++ b/lib/libc/db/btree/bt_overflow.c
@@ -99,7 +99,7 @@ __ovfl_get(t, p, ssz, buf, bufsz)
 #endif
 	/* Make the buffer bigger as necessary. */
 	if (*bufsz < sz) {
-		*buf = (char *)(*buf == NULL ? malloc(sz) : realloc(*buf, sz));
+		*buf = (char *)(*buf == NULL ? malloc(sz) : reallocf(*buf, sz));
 		if (*buf == NULL)
 			return (RET_ERROR);
 		*bufsz = sz;
diff --git a/lib/libc/db/recno/rec_get.c b/lib/libc/db/recno/rec_get.c
index 47dd773..0a8b880 100644
--- a/lib/libc/db/recno/rec_get.c
+++ b/lib/libc/db/recno/rec_get.c
@@ -132,7 +132,7 @@ __rec_fpipe(t, top)
 	if (t->bt_rdata.size < t->bt_reclen) {
 		t->bt_rdata.data = t->bt_rdata.data == NULL ?
 		    malloc(t->bt_reclen) :
-		    realloc(t->bt_rdata.data, t->bt_reclen);
+		    reallocf(t->bt_rdata.data, t->bt_reclen);
 		if (t->bt_rdata.data == NULL)
 			return (RET_ERROR);
 		t->bt_rdata.size = t->bt_reclen;
@@ -205,7 +205,7 @@ __rec_vpipe(t, top)
 				t->bt_rdata.size += (sz = 256);
 				t->bt_rdata.data = t->bt_rdata.data == NULL ?
 				    malloc(t->bt_rdata.size) :
-				    realloc(t->bt_rdata.data, t->bt_rdata.size);
+				    reallocf(t->bt_rdata.data, t->bt_rdata.size);
 				if (t->bt_rdata.data == NULL)
 					return (RET_ERROR);
 				p = (u_char *)t->bt_rdata.data + len;
@@ -244,7 +244,7 @@ __rec_fmap(t, top)
 	if (t->bt_rdata.size < t->bt_reclen) {
 		t->bt_rdata.data = t->bt_rdata.data == NULL ?
 		    malloc(t->bt_reclen) :
-		    realloc(t->bt_rdata.data, t->bt_reclen);
+		    reallocf(t->bt_rdata.data, t->bt_reclen);
 		if (t->bt_rdata.data == NULL)
 			return (RET_ERROR);
 		t->bt_rdata.size = t->bt_reclen;
diff --git a/lib/libc/db/recno/rec_put.c b/lib/libc/db/recno/rec_put.c
index 1afae0d..0a5bddf 100644
--- a/lib/libc/db/recno/rec_put.c
+++ b/lib/libc/db/recno/rec_put.c
@@ -88,9 +88,8 @@ __rec_put(dbp, key, data, flags)
 			goto einval;
 
 		if (t->bt_rdata.size < t->bt_reclen) {
-			t->bt_rdata.data = t->bt_rdata.data == NULL ?
-			    malloc(t->bt_reclen) :
-			    realloc(t->bt_rdata.data, t->bt_reclen);
+			t->bt_rdata.data = 
+			    reallocf(t->bt_rdata.data, t->bt_reclen);
 			if (t->bt_rdata.data == NULL)
 				return (RET_ERROR);
 			t->bt_rdata.size = t->bt_reclen;