free coniditionally, just to make it play nice with dmalloc which is incompatable with standard free()

3 files changed, 18 insertions, 6 deletions

diff --git a/archival/libunarchive/decompress_unzip.c b/archival/libunarchive/decompress_unzip.c
index b85eb9981..23bf6c73c 100644
--- a/archival/libunarchive/decompress_unzip.c
+++ b/archival/libunarchive/decompress_unzip.c
@@ -1024,6 +1024,10 @@ extern void gz_close(int gunzip_pid)
         if (waitpid(gunzip_pid, NULL, 0) == -1) {
                 printf("Couldnt wait ?");
         }
-        free(window);
-        free(crc_table);
+        if (window) {
+                free(window);
+        }
+        if (crc_table) {
+                free(crc_table);
+        }
 }
diff --git a/archival/libunarchive/unzip.c b/archival/libunarchive/unzip.c
index b85eb9981..23bf6c73c 100644
--- a/archival/libunarchive/unzip.c
+++ b/archival/libunarchive/unzip.c
@@ -1024,6 +1024,10 @@ extern void gz_close(int gunzip_pid)
         if (waitpid(gunzip_pid, NULL, 0) == -1) {
                 printf("Couldnt wait ?");
         }
-        free(window);
-        free(crc_table);
+        if (window) {
+                free(window);
+        }
+        if (crc_table) {
+                free(crc_table);
+        }
 }
diff --git a/libbb/unzip.c b/libbb/unzip.c
index b85eb9981..23bf6c73c 100644
--- a/libbb/unzip.c
+++ b/libbb/unzip.c
@@ -1024,6 +1024,10 @@ extern void gz_close(int gunzip_pid)
         if (waitpid(gunzip_pid, NULL, 0) == -1) {
                 printf("Couldnt wait ?");
         }
-        free(window);
-        free(crc_table);
+        if (window) {
+                free(window);
+        }
+        if (crc_table) {
+                free(crc_table);
+        }
 }