[PATCH BlueZ v1 1/3] shared/vcp: prevent dereferencing of NULL pointers

[Roman Smirnov <r.smirnov@xxxxxx>]

It is necessary to check that malloc() was able to allocate memory.

Found with the SVACE static analysis tool.
---
 src/shared/vcp.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/shared/vcp.c b/src/shared/vcp.c
index b7e17e448..2ffdb22a0 100644
--- a/src/shared/vcp.c
+++ b/src/shared/vcp.c
@@ -2128,14 +2128,15 @@ static void read_vocs_audio_descriptor(struct bt_vcp *vcp, bool success,
 	}
 
 	vocs_ao_dec_r = malloc(length+1);
-	memset(vocs_ao_dec_r, 0, length+1);
-	memcpy(vocs_ao_dec_r, value, length);
 
 	if (!vocs_ao_dec_r) {
 		DBG(vcp, "Unable to get VOCS Audio Descriptor");
 		return;
 	}
 
+	memset(vocs_ao_dec_r, 0, length+1);
+	memcpy(vocs_ao_dec_r, value, length);
+
 	DBG(vcp, "VOCS Audio Descriptor: %s", vocs_ao_dec_r);
 	free(vocs_ao_dec_r);
 	vocs_ao_dec_r = NULL;
@@ -2532,14 +2533,15 @@ static void read_aics_audio_ip_description(struct bt_vcp *vcp, bool success,
 	}
 
 	ip_descrptn = malloc(length+1);
-	memset(ip_descrptn, 0, length+1);
-	memcpy(ip_descrptn, value, length);
 
 	if (!ip_descrptn) {
 		DBG(vcp, "Unable to get Audio Input Description");
 		return;
 	}
 
+	memset(ip_descrptn, 0, length+1);
+	memcpy(ip_descrptn, value, length);
+
 	DBG(vcp, "Audio Input Description: %s", ip_descrptn);
 	free(ip_descrptn);
 	ip_descrptn = NULL;
-- 
2.43.0