[sysprof: 52/63] libsysprof-capture: wrap strdup to be NULL-safe

[Christian Hergert <chergert src gnome org>]

commit cef698e6585c0ea2d86dbee415836525b631185f
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jul 2 12:16:47 2020 -0700

    libsysprof-capture: wrap strdup to be NULL-safe

 src/libsysprof-capture/sysprof-capture-condition.c | 2 +-
 src/libsysprof-capture/sysprof-capture-reader.c    | 6 +++---
 src/libsysprof-capture/sysprof-macros-internal.h   | 2 ++
 3 files changed, 6 insertions(+), 4 deletions(-)
---
diff --git a/src/libsysprof-capture/sysprof-capture-condition.c 
b/src/libsysprof-capture/sysprof-capture-condition.c
index 5322e09..8f89157 100644
--- a/src/libsysprof-capture/sysprof-capture-condition.c
+++ b/src/libsysprof-capture/sysprof-capture-condition.c
@@ -519,7 +519,7 @@ sysprof_capture_condition_new_where_file (const char *path)
     return NULL;
 
   self->type = SYSPROF_CAPTURE_CONDITION_WHERE_FILE;
-  self->u.where_file = strdup (path);
+  self->u.where_file = sysprof_strdup (path);
   if (self->u.where_file == NULL)
     {
       free (self);
diff --git a/src/libsysprof-capture/sysprof-capture-reader.c b/src/libsysprof-capture/sysprof-capture-reader.c
index cfa42a6..2b103b5 100644
--- a/src/libsysprof-capture/sysprof-capture-reader.c
+++ b/src/libsysprof-capture/sysprof-capture-reader.c
@@ -284,7 +284,7 @@ sysprof_capture_reader_new (const char   *filename,
       return NULL;
     }
 
-  self->filename = strdup (filename);
+  self->filename = sysprof_strdup (filename);
 
   return self;
 }
@@ -1080,7 +1080,7 @@ sysprof_capture_reader_save_as (SysprofCaptureReader  *self,
     }
 
   if (self->filename == NULL)
-    self->filename = strdup (filename);
+    self->filename = sysprof_strdup (filename);
 
   close (fd);
 
@@ -1173,7 +1173,7 @@ sysprof_capture_reader_copy (SysprofCaptureReader *self)
   *copy = *self;
 
   copy->ref_count = 1;
-  copy->filename = strdup (self->filename);
+  copy->filename = sysprof_strdup (self->filename);
   copy->fd = fd;
   copy->end_time = self->end_time;
   copy->st_buf = self->st_buf;
diff --git a/src/libsysprof-capture/sysprof-macros-internal.h 
b/src/libsysprof-capture/sysprof-macros-internal.h
index 9fed465..cf814da 100644
--- a/src/libsysprof-capture/sysprof-macros-internal.h
+++ b/src/libsysprof-capture/sysprof-macros-internal.h
@@ -73,3 +73,5 @@
     if (_p != NULL) \
       (destroy) (_p); \
   } while (0)
+
+#define sysprof_strdup(s) ((s) ? strdup(s) : NULL)