Shorten if (p) free(p) to free(p) and fix a space leak in gnu.c (call

regfree).

4 files changed, 6 insertions, 9 deletions

diff --git a/src/gnu/lgnu.c b/src/gnu/lgnu.c
index 9e3dd50..1f9d76b 100644
--- a/src/gnu/lgnu.c
+++ b/src/gnu/lgnu.c
@@ -260,10 +260,9 @@ static int Gnu_gc (lua_State *L) {
   TGnu *ud = check_ud (L);
   if (ud->freed == 0) {           /* precaution against "manual" __gc calling */
     ud->freed = 1;
-    if (ud->r.regs_allocated != REGS_UNALLOCATED) {
-      free (ud->match.start);
-      free (ud->match.end);
-    }
+    regfree (&ud->r);
+    free (ud->match.start);
+    free (ud->match.end);
   }
   return 0;
 }
diff --git a/src/pcre/lpcre.c b/src/pcre/lpcre.c
index bf72f13..ee65859 100644
--- a/src/pcre/lpcre.c
+++ b/src/pcre/lpcre.c
@@ -337,7 +337,7 @@ static int Lpcre_gc (lua_State *L) {
     if (ud->pr)      pcre_free (ud->pr);
     if (ud->extra)   pcre_free (ud->extra);
     if (ud->tables)  pcre_free ((void *)ud->tables);
-    if (ud->match)   free (ud->match);
+    free (ud->match);
   }
   return 0;
 }
diff --git a/src/posix/lposix.c b/src/posix/lposix.c
index aa500ac..16e61ed 100644
--- a/src/posix/lposix.c
+++ b/src/posix/lposix.c
@@ -193,8 +193,7 @@ static int Posix_gc (lua_State *L) {
   if (ud->freed == 0) {           /* precaution against "manual" __gc calling */
     ud->freed = 1;
     regfree (&ud->r);
-    if (ud->match)
-      free (ud->match);
+    free (ud->match);
   }
   return 0;
 }
diff --git a/src/tre/ltre.c b/src/tre/ltre.c
index 0b1f1af..cdbe3bd 100644
--- a/src/tre/ltre.c
+++ b/src/tre/ltre.c
@@ -208,8 +208,7 @@ static int Ltre_gc (lua_State *L) {
   if (ud->freed == 0) {           /* precaution against "manual" __gc calling */
     ud->freed = 1;
     tre_regfree (&ud->r);
-    if (ud->match)
-      free (ud->match);
+    free (ud->match);
   }
   return 0;
 }