fix spelling errors detected by lintian

Change-Id: I381618eb55cc513cfa9c2e384c27cead0935c8bf
diff --git a/src/decoding.cpp b/src/decoding.cpp
index d439e30..99a17dc 100644
--- a/src/decoding.cpp
+++ b/src/decoding.cpp
@@ -77,7 +77,7 @@
 			/* TS 44.060, table 10.4.14a.1, row 3 & 5 */
 			/* only filling bytes left */
 			LOGP(DRLCMACUL, LOGL_DEBUG, "UL DATA LI contains "
-				"only filling bytes with extention octet: LI=%d, E=%d, count=%d\n",
+				"only filling bytes with extension octet: LI=%d, E=%d, count=%d\n",
 				li->li, li->e, num_chunks);
 			break;
 		} else if (li->li > 0) {
@@ -92,7 +92,7 @@
 		}
 
 		LOGP(DRLCMACUL, LOGL_DEBUG, "UL DATA LI contains "
-			"extention octet: LI=%d, E=%d, count=%d\n",
+			"extension octet: LI=%d, E=%d, count=%d\n",
 			li->li, li->e, num_chunks);
 		num_chunks += 1;
 
@@ -168,7 +168,7 @@
 		chunks[num_chunks].is_complete = li->li || is_last_block;
 
 		LOGP(DRLCMACUL, LOGL_DEBUG, "UL DATA LI contains "
-			"extention octet: LI=%d, M=%d, E=%d, count=%d\n",
+			"extension octet: LI=%d, M=%d, E=%d, count=%d\n",
 			li->li, li->m, li->e, num_chunks);
 		num_chunks += 1;