fix compiler warnings (GCC + Clang)

src/coders/BasicParser.inl

@@ -6,7 +6,7 @@
 #include "util/stringutil.hpp"
 
 namespace {
-    int is_box(int c) {
+    inline int is_box(int c) {
         switch (c) {
             case 'B':
             case 'b':
@@ -21,7 +21,7 @@ namespace {
         return 10;
     }
 
-    double power(double base, int64_t power) {
+    inline double power(double base, int64_t power) {
         double result = 1.0;
         for (int64_t i = 0; i < power; i++) {
             result *= base;

src/coders/toml.cpp

@@ -30,7 +30,6 @@ class TomlReader : BasicParser<char> {
     // todo: extract common part
     std::string parseMultilineString() {
         pos += 2;
-        char next = peek();
 
         std::stringstream ss;
         while (hasNext()) {

src/coders/vec3.cpp

@@ -68,7 +68,7 @@ static model::Mesh build_mesh(
     const glm::vec2* uvs = nullptr;
     const glm::vec3* normals = nullptr;
 
-    int coordsIndex, uvsIndex, normalsIndex;
+    int coordsIndex = 0, uvsIndex = 0, normalsIndex = 0;
 
     for (int i = 0; i < attrs.size(); i++) {
         const auto& attr = attrs[i];
@@ -204,7 +204,7 @@ File vec3::load(
     // Header
     reader.checkMagic("\0\0VEC3\0\0", 8);
     int version = reader.getInt16();
-    int reserved = reader.getInt16();
+    [[maybe_unused]] int reserved = reader.getInt16();
     if (version > VERSION) {
         throw std::runtime_error("unsupported VEC3 version");
     }