Bug 1123527 - Fix a trivial leak. r=jhford.

cppcheck found this. Not important, but doesn't hurt to fix it.

--HG--
extra : rebase_source : 945ffc0009547b6f6f9ee1518b0e5a84c0ba712e

b2g/gaia/run-b2g.c

@@ -29,6 +29,7 @@ int main(int argc, char* argv[], char* envp[]){
     }
     full_profile_path = (char*) malloc(strlen(cwd) + strlen(GAIA_PATH) + 2);
     if (!full_profile_path) {
+        free(full_path);
         error(NOMEM);
         return -2;
     }